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(CNN)Here's a look at Islamic State in Iraq and Syria (ISIS).
Facts:
Started as an al Qaeda splinter group.
Started as an al Qaeda splinter group.
The group is implementing Sharia Law, rooted in eighth century Islam, to establish a society that mirrors the region's ancient past.
ISIS is known for killing dozens of people at a time and carrying out public executions, crucifixions and other acts.
ISIS uses modern tools like social media to promote reactionary politics and religious fundamentalism. Fighters are destroying holy sites and valuable antiquities even as their leaders propagate a return to the early days of Islam.
In 2014, ISIS controlled more than 34,000 square miles in Syria and Iraq, from the Mediterranean coast to south of Baghdad. At the end of 2016, ISIS territory had shrunk to about 23,320 square miles, according to IHS Jane's.
In 2015, ISIS was believed to be holding 3,500 people as slaves, according to a United Nations report. Most of the enslaved were women and children from the Yazidi community, but some were from other ethnic and religious minority communities.
ISIS's revenue comes from oil production and smuggling, taxes, ransoms from kidnappings, selling stolen artifacts, extortion and controlling crops.
Leader:
Abu Bakr al-Baghdadi.
Abu Bakr al-Baghdadi.
Is reportedly based in Syria.
Al-Baghdadi was detained for several months in Camp Bucca, which was a US-run prison in southern Iraq. He was released in 2004.
Timeline:
2004 - Abu Musab al-Zarqawi establishes al Qaeda in Iraq (AQI).
2004 - Abu Musab al-Zarqawi establishes al Qaeda in Iraq (AQI).
2006 - Under al-Zarqawi, al Qaeda in Iraq tries to spark a sectarian war against the majority Shia community.
June 7, 2006 - Al-Zarqawi is killed in a US strike. Abu Ayyub al-Masri takes his place as leader of AQI.
October 2006 - Al-Masri announces the creation of Islamic State of Iraq (ISI), and establishes Abu Omar al-Baghdadi as its leader.
April 2010 - Abu Bakr al-Baghdadi becomes leader of ISI after Abu Omar al-Baghdadi and al-Masri are killed in a joint US-Iraqi operation.
April 2013 - ISI declares its absorption of an al Qaeda-backed militant group in Syria, Jabhat al-Nusra, also known as the al-Nusra Front. Al-Baghdadi says that his group will now be known as Islamic State in Iraq and the Levant (ISIL or ISIS).
January 2014 - ISIS takes control of Falluja.
February 3, 2014 - Al Qaeda renounces ties to ISIS after months of infighting between al-Nusra Front and ISIS.
May 2014 - ISIS kidnaps more than 140 Kurdish schoolboys in Syria, forcing them to take lessons in radical Islamic theology, according to London-based monitoring group Syrian Observatory for Human Rights.
June 20, 2014 - The United Nations announces that more than one million Iraqis have been displaced.
June 21, 2014 - ISIS takes control of Al-Qaim, a town on the border with Syria, as well as three other Iraqi towns.
June 28, 2014 - Iraqi Kurdistan restricts border crossings into the region for refugees.
June 29, 2014 - ISIS announces the creation of a caliphate (Islamic state) that erases all state borders, making al-Baghdadi the self-declared authority over the world's estimated 1.5 billion Muslims. The group also announces a name change to the Islamic State (IS).
June 30, 2014 - The Pentagon announces the United States is sending an additional 300 troops to Iraq, bringing the total US forces in Iraq to nearly 800. Troops and military advisers are sent to Iraq to support Iraqi security forces and help protect the US Embassy and the airport in Baghdad.
July 2014 - ISIS takes control of Syria's largest oilfield and seizes a gas field in the Homs Province, storming the facility and killing dozens of workers. Militants conquer a 90-mile stretch of Syrian towns, from Deir Ezzor to the Iraq border. In Mosul, they blow up Jonah's tomb, a holy site dating back to the 8th century BC.
August 6, 2014 - ISIS fighters attack the northern Iraqi town of Sinjar, home of a religious minority group called the Yazidis. More than 30,000 Yazidi families are stranded in the Sinjar Mountains. A Yazidi lawmaker says that 500 men have been killed, 70 children have died of thirst and women are being sold into slavery.
August 8, 2014 - Two US jet fighters bomb ISIS artillery units in Iraq. President Barack Obama authorizes "targeted airstrikes" if needed to protect US personnel and prevent potential genocide of minority groups.
August 19, 2014 - ISIS posts a video showing the beheading of US journalist James Foley, missing in Syria since 2012.
September 2, 2014 - ISIS releases a video showing the beheading of US journalist Steven Sotloff. Sotloff's apparent executioner speaks in the same British accent as the man who purportedly killed Foley.
September 11, 2014 - The CIA announces that the number of people fighting for ISIS may be more than three times the previous estimates.
September 13, 2014 - ISIS militants post a video showing the apparent execution of British aid worker David Haines.
October 3, 2014 - ISIS releases a video showing the apparent beheading of British hostage Alan Henning.
November 3, 2014 - The Iraqi government announces ISIS militants have killed 322 members of a Sunni tribe in a series of executions.
November 14, 2014 - The UN Independent International Commission of Inquiry on Syria concludes that ISIS has committed war crimes and crimes against humanity.
January 22, 2015 - US diplomatic officials say that coalition airstrikes have killed an estimated 6,000 ISIS fighters.
January 24, 2015 - A photo and audio released by ISIS appear to show the beheaded body of Japanese hostage, Haruna Yukawa.
January 31, 2015 - ISIS releases a video that appears to show the decapitated body of a second Japanese hostage, Kenji Goto.
February 3, 2015 - Video and still images posted by ISIS apparently shows Jordanian pilot Moath al-Kasasbeh being burned alive while locked in a cage.
February 5, 2015 - Jordanian fighter jets carry out airstrikes over Syria, reportedly hitting ISIS training centers as well as arms and ammunition depots in Raqqa. The next day, ISIS claims that the airstrikes killed American hostage Kayla Jean Mueller. The post contains a picture of a collapsed building and ISIS claims Mueller is buried in the rubble.
February 10, 2015 - Mueller's family announces she is dead, after receiving confirmation from ISIS, including a photo of her wrapped in a burial shroud.
February 11, 2015 - President Obama asks Congress to formally authorize use of military force against ISIS.
February 15, 2015 - ISIS posts a video in which militants appear to behead more than a dozen Egyptian Christians on a Libyan beach. The next day, Egyptian warplanes strike ISIS targets in Libya.
February 22, 2015 - ISIS releases a video that appears to show at least 21 Kurdish Peshmerga fighters in cages carried down Iraqi streets.
February 26, 2015 - Jihadi John, the disguised man with a British accent who appears in ISIS videos as the executioner of Western hostages, is identified as Mohammed Emwazi, a Kuwaiti-born Londoner. On the same day, ISIS releases a video of its fighters destroying antiquities at the Mosul Museum.
March 2015 - ISIS posts images of a man being thrown off a building in Raqqa, Syria. He had been accused of being gay. There are at least a half dozen documented cases of ISIS killing men accused of being gay.
March 1, 2015 - ISIS releases 19 Christian prisoners. All but one are from a group of 220 Assyrians captured in northern Syria.
March 7, 2015 - In an audio message purportedly from Boko Haram leader Abubakar Shekau, the Nigeria-based radical Islamic group pledges allegiance to ISIS. Days later, an ISIS spokesman claims the caliphate has expanded to western Africa.
March 12, 2015 - Iraqi forces retake most of Tikrit. In western Iraq, ISIS blows up the Iraqi army headquarters north of Ramadi, killing at least 40 Iraqi soldiers.
April 8, 2015 - According to Iraqi Kurdistan officials, ISIS releases more than 200 Yazidi women and children, as well as the ill or elderly.
April 19, 2015 - ISIS releases a video that appears to show militants beheading two groups of prisoners in Libya. The Ethiopian government confirms that 30 of the victims were Ethiopian citizens.
May 16, 2015 - A key ISIS leader is killed during a US Special Operations raid in Syria, according to US officials. His wife is captured and the raid yields significant intelligence on ISIS's structure and communications.
May 17, 2015 - ISIS seizes control of Ramadi, the largest city in western Iraq, after government security forces pull out of a military base.
May 21, 2015 - ISIS takes control of Palmyra, an ancient Syrian city that is a UNESCO World Heritage Site. According to the Syrian Observatory for Human Rights, it was the last Syria-Iraq border crossing under control of Syrian troops.
June 14, 2015 - A British teen, Talha Asmal, is reportedly one of four ISIS suicide bombers who attack the headquarters of a Shia militia group in Iraq, killing at least 11. Before the bombing, ISIS posted photos of Asmal, 17, posing next to their black flag on social media. According to the BBC, Asmal left England in March to join the Islamic fundamentalists.
June 19, 2015 - The State Department issues its annual terrorism report, declaring that ISIS is becoming a greater threat than al Qaeda. The frequency and savagery of ISIS attacks are alarming, according to the report.
June 24, 2015 - The Syrian government reports that ISIS militants have destroyed two Muslim holy sites in Palmyra. The group attacked a 500-year-old shrine and a tomb where a descendent of the Prophet Mohammed's cousin was reportedly buried.
June 26, 2015 - A gunman kills at least 38 people at a beachfront Tunisian hotel, and a bomb kills at least 27 people at a mosque in Kuwait. ISIS claims responsibility for the attacks.
July 1, 2015 - ISIS launches simultaneous attacks on five Egyptian military checkpoints, reportedly killing 17 Egyptian soldiers and injuring 30 others. According to the Egyptian military, 100 terrorists are killed in the fighting.
July 4, 2015 - The Syrian Observatory for Human Rights reports it has received a video showing ISIS militants executing 25 captives in Palmyra.
July 17, 2015 - As Iraqis celebrate Eid al-Fitr, a holiday marking the end of the fast for Ramadan in Khan Bani Saad, ISIS detonates an ice truck in a crowded marketplace, killing at least 120 people and wounding at least 140 more.
August 2015 - ISIS destroys antiquities in Palmyra, including the nearly 2,000-year-old Temple of Baalshami. UNESCO, the UN's cultural organization, calls the destruction of the temple a "war crime."
November 12, 2015 - The Pentagon announces that it has conducted a remote control drone strike targeting Mohammed Emwazi, also known as "Jihadi John." ISIS later confirms the death of Emwazi.
November 12, 2015 - Two suicide bombs hit the Bourj al-Barajneh district of southern Beirut, killing more than 40 people and wounding hundreds. ISIS claims responsibility for the attack.
November 13, 2015 - After a two-day battle, the Peshmerga Iraqi Kurdish military force declares victory in liberating the Iraqi town of Sinjar from ISIS. The battle was backed by the US coalition air power.
November 13, 2015 - Three teams of gun-wielding ISIS suicide bombers hit six locations around Paris, killing at least 129 people and wounding hundreds.
December 10, 2015 - A spokesman for the US-led coalition comfirms that ISIS Finance Minister Abu Saleh was killed in an airstrike in late November in Iraq.
December 28, 2015 - Iraqi troops retake the city of Ramadi from ISIS and raise the Iraqi flag on top of the government compound in the city's center, according to an Iraqi military spokesman.
January 24, 2016 - ISIS releases a video that purports to show final messages from the Paris attackers.
February 21, 2016 - Multiple attacks in Homs and southern Damascus kill at least 122 and injure scores, according to Syria's state-run SANA news agency. ISIS claims responsibility.
March 22, 2016 - Attacks on the airport and a subway station in Brussels, Belgium kill more than 30 people and wound about 270 more. ISIS claims its "fighters" launched the attacks.
March 25, 2016 - The Pentagon confirms that US military forces have killed ISIS' finance minister, Abd al-Rahman Mustafa al-Qaduli. While Defense Secretary Ash Carter would not give details on the operation, another US official told CNN that special operations forces intended to capture al-Qaduli alive, but the plan was modified at the last moment.
June 26, 2016 - A senior Iraqi general announces on state TV that the battle for Falluja is over, as Iraqi troops retake the final ISIS holdout in the city.
June 28, 2016 - At least 44 people die and more than 230 are injured when three attackers armed with firearms and explosives arrive at Turkey's Istanbul Ataturk Airport in a taxi, then open fire before blowing themselves up. US officials believe the man who directed the three attackers is Akhmed Chatayev, a terrorist from Russia's North Caucasus region and a well-known ISIS lieutenant.
July 1-2, 2016 - Attackers invade the Holey Artisan Bakery cafe in a diplomatic enclave of Dhaka, the capital of Bangladesh. Gunmen kill 20 hostages and two police officers before authorities raid the restaurant and end the nearly 11-hour standoff. ISIS claims responsibility for the attack, but Bangladeshi officials say the attack was carried out by homegrown militants. US officials focus on ISIS as the perpetrator after photos purportedly showing the inside of the cafe and dead hostages are posted on an ISIS-affiliated website.
July 3, 2016 - A suicide car bomb detonates in a busy shopping district in Baghdad, killing at least 292 people and injuring another 200. It is the deadliest single attack in Iraq since 2003. ISIS claims responsibility.
August 30, 2016 - According to a statement from the terror group and its Amaq news agency, ISIS spokesman Abu Muhammad al-Adnani has been killed in the area of Aleppo, Syria. Without confirming al-Adnani's death, the Pentagon confirms that coalition forces conducted an airstrike in al Bab, Syria, targeting him.
September 16, 2016 - Pentagon Press Secretary Peter Cook says a US air strike targeted and killed Wael Adel Salman, aka Abu Muhammad al-Furqan, ISIS's chief spokesman, just days after killing his predecessor. Salman was the ISIS minister of information, responsible for overseeing the production of "terrorist propaganda videos showing torture and executions," Cook says.
October 17, 2016 - Iraqi Prime Minister Haider al-Abadi makes a televised statement announcing the start of the mission to retake the key city of Mosul, the last remaining ISIS stronghold. He says a coalition of about 100,000 troops will play a role in the operation, though some will have a holding role behind the front lines or other support roles. The force includes about 54,000 members of the Iraqi Security Forces, 40,000 Kurdish Peshmerga fighters, 14,000 members of paramilitary units - 9,000 Sunni fighters and 5,000 from other minorities including Christians, Turkmen and Yazidis - and approximately 500 US service members who will serve mainly in a logistical capacity. US military officials have estimated up to 5,000 ISIS fighters are in Mosul, but the terror group's supporters say there are 7,000.
October 24, 2016 - Suicide bombers attack sleeping cadets at a police training academy in Pakistan, killing 61 and injuring 117. ISIS claims responsibility, releasing a photo of the three purported attackers, but Pakistani military leaders say they believe a Pakistan-based group, Lashkar-e-Jhangvi carried out the attack.
April 9, 2017 - ISIS claims responsibility for two deadly bombings targeting Coptic Christian churches on Palm Sunday in Egypt. At least 49 people were killed and 119 others injured in the blasts.
April 13, 2017 - The US military drops its most powerful non-nuclear bomb on an ISIS compound in Afghanistan. An Afghan official later tells CNN that 94 militants were killed in the blast.
May 26-28, 2017 - More than 200 civilians are murdered by ISIS militants in Mosul, according to the UN.
May 26, 2017 - Buses carrying Coptic Christians in Egypt are attacked by assailants, who fatally shoot at least 29. ISIS claims responsibility.
July 10, 2017 - Iraqi Prime Minister Haider al-Abadi declares that Mosul has been recaptured from ISIS.
October 17, 2017 - ISIS loses control of its self-declared capital, the Syrian city of Raqqa. US-backed forces fighting in Raqqa say "major military operations" have ended, though there are still pockets of resistance in the city.
December 9, 2017 - The Iraqi military says it has "fully liberated" all of Iraq's territory of "ISIS terrorist gangs" and retaken full control of the Iraqi-Syrian border. The campaign to eradicate the Islamic State took more than three years and about 25,000 coalition airstrikes.
Photos: The ISIS terror threat
Wounded passengers are treated following a suicide bombing at the Brussels Airport on March 22, 2016. The attacks on the airport and a subway killed 32 people and wounded more than 300. ISIS claims its "fighters" launched the attacks in the Belgian capital.
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Syrians gather at the site of a double car bomb attack in the Al-Zahraa neighborhood of the Homs, Syria, on February 21, 2016. Multiple attacks in Homs and southern Damascus kill at least 122 and injure scores, according to the state-run SANA news agency. ISIS claimed responsibility.
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Syrian pro-government forces gather at the site of a deadly triple bombing Sunday, January 31, in the Damascus suburb of Sayeda Zeynab. ISIS claimed responsibility for the attack, according to a statement circulating online from supporters of the terrorist group.
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Yemenis check the scene of a car bomb attack Sunday, December 6, in Aden, Yemen. Aden Gov. Jaafar Saad and six bodyguards died in the attack, for which the terror group ISIS claimed responsibility.
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Investigators check the scene of a mosque attack Friday, November 27, in northern Bangladesh's Bogra district. ISIS has claimed responsibility for the attack that left at least one person dead and three more wounded.
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Wounded people are helped outside the Bataclan concert hall in Paris following a series of coordinated attacks in the city on Friday, November 13. The militant group ISIS claimed responsibility for the attacks, which killed at least 130 people and wounded hundreds more.
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Emergency personnel and civilians gather at the site of a twin suicide bombing in Beirut, Lebanon, on Thursday, November 12. The bombings killed at least 43 people and wounded more than 200 more. ISIS appeared to claim responsibility in a statement posted on social media.
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Smoke rises over the northern Iraqi town of Sinjar on November 12. Kurdish Iraqi fighters, backed by a U.S.-led air campaign, retook the strategic town, which ISIS militants overran last year. ISIS wants to create an Islamic state across Sunni areas of Iraq and Syria.
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Syrian government troops walk inside the Kweiras air base on Wednesday, November 11, after they broke a siege imposed by ISIS militants.
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Members of the Egyptian military approach the wreckage of a Russian passenger plane Sunday, November 1, in Hassana, Egypt. The plane crashed the day before, killing all 224 people on board. ISIS claimed responsibility for downing the plane, but the group's claim wasn't immediately verified.
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An explosion rocks Kobani, Syria, during a reported car bomb attack by ISIS militants on Tuesday, October 20.
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Shiite fighters, fighting alongside Iraqi government forces, fire a rocket at ISIS militants as they advance toward the center of Baiji, Iraq, on Monday, October 19.
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Smoke rises above a damaged building in Ramadi, Iraq, following a coalition airstrike against ISIS positions on Saturday, August 15.
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Iraqi men look at damage following a bomb explosion that targeted a vegetable market in Baghdad on Thursday, August 13. ISIS claimed responsibility for the attack.
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In this image taken from social media, an ISIS fighter holds the group's flag after the militant group overran the Syrian town of al-Qaryatayn on Thursday, August 6, the London-based Syrian Observatory for Human Rights reported. ISIS uses modern tools such as social media to promote reactionary politics and religious fundamentalism. Fighters are destroying holy sites and valuable antiquities even as their leaders propagate a return to the early days of Islam.
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An ISIS fighter poses with spoils purportedly taken after capturing the Syrian town of al-Qaryatayn.
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Smoke rises as Iraqi security forces bomb ISIS positions in the eastern suburbs of Ramadi, Iraq, on August 6.
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Buildings reduced to piles of debris can be seen in the eastern suburbs of Ramadi on August 6.
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The governor of the Asir region in Saudi Arabia, Prince Faisal bin Khaled bin Abdulaziz, left, visits a man who was wounded in a suicide bombing attack on a mosque in Abha, Saudi Arabia, on August 6. ISIS claimed responsibility for the explosion, which killed at least 13 people and injured nine others.
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Saudi officials and investigators check the inside of the mosque on August 6.
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Mourners in Gaziantep, Turkey, grieve over a coffin Tuesday, July 21, during a funeral ceremony for the victims of a suspected ISIS suicide bomb attack. That bombing killed at least 31 people in Suruc, a Turkish town that borders Syria. Turkish authorities blamed ISIS for the attack.
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Protesters in Istanbul carry anti-ISIS banners and flags to show support for victims of the Suruc suicide blast during a demonstration on Monday, July 20.
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People in Ashmoun, Egypt, carry the coffin for 1st Lt. Mohammed Ashraf, who was killed when the ISIS militant group attacked Egyptian military checkpoints on Wednesday, July 1. At least 17 soldiers were reportedly killed, and 30 were injured.
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Syrians wait near the Turkish border during clashes between ISIS and Kurdish armed groups in Kobani, Syria, on Thursday, June 25. The photo was taken in Sanliurfa, Turkey. ISIS militants disguised as Kurdish security forces infiltrated Kobani on Thursday and killed "many civilians," said a spokesman for the Kurds in Kobani.
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Residents examine a damaged mosque after an Iraqi Air Force bombing in the ISIS-seized city of Falluja, Iraq, on Sunday, May 31. At least six were killed and nine others wounded during the bombing.
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People search through debris after an explosion at a Shiite mosque in Qatif, Saudi Arabia, on Friday, May 22. ISIS claimed responsibility for the attack, according to tweets from ISIS supporters, which included a formal statement from ISIS detailing the operation.
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Iraqi soldiers fire their weapons toward ISIS group positions in the Garma district, west of the Iraqi capital of Baghdad, on Sunday, April 26. Pro-government forces said they had recently made advances on areas held by Islamist jihadists.
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A member of Afghanistan's security forces stands at the site where a suicide bomber on a motorbike blew himself up in front of the Kabul Bank in Jalalabad, Afghanistan, on Saturday, April 18. ISIS claimed responsibility for the attack. The explosion killed at least 33 people and injured more than 100 others, a public health spokesman said.
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Iraqi counterterrorism forces patrol in Ramadi on April 18.
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Thousands of Iraqis cross a bridge over the Euphrates River to Baghdad as they flee Ramadi on Friday, April 17.
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Yazidis embrace after being released by ISIS south of Kirkuk, Iraq, on Wednesday, April 8. ISIS released more than 200 Yazidis, a minority group whose members were killed, captured and displaced when the Islamist terror organization overtook their towns in northern Iraq last summer, officials said.
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Kurdish Peshmerga forces help Yazidis as they arrive at a medical center in Altun Kupri, Iraq, on April 8.
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A Yazidi woman mourns for the death of her husband and children by ISIS after being released south of Kirkuk on April 8. ISIS is known for killing dozens of people at a time and carrying out public executions, crucifixions and other acts.
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People in Tikrit inspect what used to be a palace of former President Saddam Hussein on April 3.
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On April 1, Shiite militiamen celebrate the retaking of Tikrit, which had been under ISIS control since June. The push into Tikrit came days after U.S.-led airstrikes targeted ISIS bases around the city.
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Iraqi security forces launch a rocket against ISIS positions in Tikrit on Monday, March 30.
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The parents of 19-year-old Mohammed Musallam react at the family's home in the East Jerusalem Jewish settlement of Neve Yaakov on Tuesday, March 10. ISIS released a video purportedly showing a young boy executing Musallam, an Israeli citizen of Palestinian descent who ISIS claimed infiltrated the group in Syria to spy for the Jewish state. Musallam's family told CNN that he had no ties with the Mossad, Israel's spy agency, and had, in fact, been recruited by ISIS.
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Iraqi Shiite fighters cover their ears as a rocket is launched during a clash with ISIS militants in the town of Al-Alam, Iraq, on Monday, March 9.
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Displaced Assyrian women who fled their homes due to ISIS attacks pray at a church on the outskirts of Damascus, Syria, on Sunday, March 1. ISIS militants abducted at least 220 Assyrians in Syria.
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Safi al-Kasasbeh, right, receives condolences from tribal leaders at his home village near Karak, Jordan, on Wednesday, February 4. Al-Kasasbeh's son, Jordanian pilot Moath al-Kasasbeh, was burned alive in a video that was recently released by ISIS militants. Jordan is one of a handful of Middle Eastern nations taking part in the U.S.-led military coalition against ISIS.
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A Kurdish marksman looks over a destroyed area of Kobani on Friday, January 30, after the city had been liberated from the ISIS militant group. The Syrian city, also known as Ayn al-Arab, had been under assault by ISIS since mid-September.
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Kurdish people celebrate in Suruc, Turkey, near the Turkish-Syrian border, after ISIS militants were expelled from Kobani on Tuesday, January 27.
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Collapsed buildings are seen in Kobani on January 27 after Kurdish forces took control of the town from ISIS.
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Junko Ishido, mother of Japanese journalist Kenji Goto, reacts during a news conference in Tokyo on Friday, January 23. ISIS would later kill Goto and another Japanese hostage, Haruna Yukawa.
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ISIS militants are seen through a rifle's scope during clashes with Peshmerga fighters in Mosul, Iraq, on Wednesday, January 21.
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An elderly Yazidi man arrives in Kirkuk after being released by ISIS on Saturday, January 17. The militant group released about 200 Yazidis who were held captive for five months in Iraq. Almost all of the freed prisoners were in poor health and bore signs of abuse and neglect, Kurdish officials said.
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Smoke billows behind an ISIS sign during an Iraqi military operation to regain control of the town of Sadiyah, about 95 kilometers (60 miles) north of Baghdad, on Tuesday, November 25.
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Fighters from the Free Syrian Army and the Kurdish People's Protection Units join forces to fight ISIS in Kobani on Wednesday, November 19.
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A picture taken from Turkey shows smoke rising after ISIS militants fired mortar shells toward an area controlled by Syrian Kurdish fighters near Kobani on Monday, November 3.
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Iraqi special forces search a house in Jurf al-Sakhar, Iraq, on Thursday, October 30, after retaking the area from ISIS.
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ISIS militants stand near the site of an airstrike near the Turkey-Syria border on Thursday, October 23. The United States and several Arab nations have been bombing ISIS targets in Syria to take out the militant group's ability to command, train and resupply its fighters.
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Kurdish fighters walk to positions as they combat ISIS forces in Kobani on Sunday, October 19.
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Heavy smoke rises in Kobani following an airstrike by the U.S.-led coalition on October 18.
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Cundi Minaz, a female Kurdish fighter, is buried in a cemetery in the southeastern Turkish town of Suruc on Tuesday, October 14. Minaz was reportedly killed during clashes with ISIS militants in nearby Kobani.
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Kiymet Ergun, a Syrian Kurd, celebrates in Mursitpinar, Turkey, after an airstrike by the U.S.-led coalition in Kobani on Monday, October 13.
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Alleged ISIS militants stand next to an ISIS flag atop a hill in Kobani on Monday, October 6.
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A Kurdish Peshmerga soldier who was wounded in a battle with ISIS is wheeled to the Zakho Emergency Hospital in Duhuk, Iraq, on Tuesday, September 30.
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Syrian Kurds wait near a border crossing in Suruc as they wait to return to their homes in Kobani on Sunday, September 28.
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A elderly man is carried after crossing the Syria-Turkey border near Suruc on Saturday, September 20.
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A Kurdish Peshmerga fighter launches mortar shells toward ISIS militants in Zumar, Iraq, on Monday, September 15.
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Kurdish Peshmerga fighters fire at ISIS militant positions from their position on the top of Mount Zardak, east of Mosul, Iraq, on Tuesday, September 9.
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Displaced Iraqis receive clothes from a charity at a refugee camp near Feeshkhabour, Iraq, on Tuesday, August 19.
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Aziza Hamid, a 15-year-old Iraqi girl, cries for her father while she and some other Yazidi people are flown to safety Monday, August 11, after a dramatic rescue operation at Iraq's Mount Sinjar. A CNN crew was on the flight, which took diapers, milk, water and food to the site where as many as 70,000 people were trapped by ISIS. But only a few of them were able to fly back on the helicopter with the Iraqi Air Force and Kurdish Peshmerga fighters.
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Thousands of Yazidis are escorted to safety by Kurdish Peshmerga forces and a People's Protection Unit in Mosul on Saturday, August 9.
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Thousands of Yazidi and Christian people flee Mosul on Wednesday, August 6, after the latest wave of ISIS advances.
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A Baiji oil refinery burns after an alleged ISIS attack in northern Selahaddin, Iraq, on Thursday, July 31.
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A Syrian rebel fighter lies on a stretcher at a makeshift hospital in Douma, Syria, on Wednesday, July 9. He was reportedly injured while fighting ISIS militants.
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Children stand next to a burnt vehicle during clashes between Iraqi security forces and ISIS militants in Mosul on Tuesday, June 10.
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