Members of the Free Syrian Army react as they fire a homemade rocket toward regime forces in Deir al-Zor on Sunday, June 16. Tensions in Syria flared in March 2011 during the onset of the Arab Spring, escalating into an ongoing civil war. View the most compelling images taken since the start of the conflict.
(CNN) -- The Russian Consulate General in Syria's largest city has suspended operations, according to Russia's state-run RIA Novosti news agency.
"The operations of the Russian Federation's Consulate General in Aleppo have been suspended," the Russian Foreign Ministry said in a statement, the news agency reported. "Regarding all issues, contact the consular department of the Russian Embassy in Damascus."
Russia has refused to support U.N. sanctions against Syria, its longtime ally.
Read more: U.N. agencies: Stop the suffering in Syria
Located in northwest Syria, Aleppo has been torn by months of fighting between government forces and rebel groups, who control much of the city, where electricity and food have been in short supply.
Two blasts at Aleppo University killed at least 82 people Tuesday, Syria's U.N. ambassador, Bashar Jaafari, told the U.N. Security Council. Another 162 students were wounded in the "cowardly terrorist act," he said.
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Referring to the rebels, state-run media blamed "terrorists" for the explosions, which occurred on the first day of exams at the school.
But regime warplanes shelled the university, said Free Syria Army spokesman Abdulla Yasin. The rebels were nowhere near the campus, which is in a government-controlled area, he said.
In addition to housing students, the university dormitories -- which bore the brunt of Tuesday's attack -- are serving as temporary homes to families displaced by fighting in Aleppo, Homs and Hama.
Read more: Syrian refugee crisis
Across Aleppo, 99 deaths were counted Tuesday, the opposition Local Coordination Committees of Syria said.
CNN cannot independently verify many claims from Syria, as the government has severely restricted access by international journalists.
Despite Moscow's announcement, another longtime Syrian ally predicted Tuesday that Damascus will emerge triumphant from the strife.
Read more: Syrian rebel leader talks victory and squalor
Iranian President Mahmoud Ahmadinejad made that prediction in a meeting in Tehran with Syrian Prime Minister Wael Nader al-Halki, Iran's state-run Islamic Republic News Agency reported.
"We pray that chaotic situation, which certain powers have imposed against Syria, will end by Syrian nation solidarity," the president said, IRNA reported.
The events came on the same day that a video was posted online showing what it says are two Syrian military officers begging President Bashar al-Assad to set up a prisoner swap to free them from their rebel captors.
In the video, the two men say they were abducted last October by the Free Syrian Army, a loosely organized group of Syrians who have been fighting for nearly two years to oust al-Assad.
Government frees 2,130 prisoners in exchange for 48 Iranians
"We were captured by FSA while we were armed, and we have been treated based on the International conventions," says Gen. Brig. Ahmed Raeidi, referring to international detention laws.
Raeidi and Staff Brigadier Hussein Allouch, an engineer from the Armored Vehicles Department, are shown beseeching al-Assad -- a fellow Alawite -- to help them.
"We have been pleading with the Syrian regime to consider our release and to arrange a prisoner swap in exchange (for) 50 innocent civilians, including women, but we haven't received any response from the Syrian authorities," Raeidi says.
The Syrian government has recently engaged in prisoner swaps.
Last week, 48 Iranians who had been held hostage by Syrian rebels for five months were freed in exchange for the release of more than 2,000 government prisoners.
Read more: Syrian rebels hold pro-government prisoners in former school
"I urge you, Mr. President, are the Syrian officers considered to be nothing and less important than some Iranian citizens?" Raeidi said, his voice cracking, "Or (does) the foreign policy ... force us to remain victims and remain in captivity?"
He adds, "Thanks for listening."
The video is one of many on the Internet that purport to depict the war in Syria -- images that tell the world a story far different from the one the Syrian government allows international journalists to see during the occasional official visits that the regime allows.
Since the uprising began in March 2011, al-Assad has accused "terrorists" of causing the violence in Syria and has said his government has the right to fight back.
The FSA says al-Assad's government has oppressed the country for years and has slaughtered thousands of innocent Syrians in recent months to retain power.
Another day, more death
In all, at least 237 people were killed Tuesday, according to the opposition LCC.
In Damascus, the capital and seat of al-Assad's power, the Syrian air force continued an intense assault, rebels said.
Rebels said a government jet fighter shelled the eastern Ghouta neighborhood in Damascus, an attack that was captured on video and posted on the Web.
Brahimi called 'an aging tourist'
Efforts by Lakhdar Brahimi to broker a peace were met with derision by a state-run newspaper, which described the 78-year-old U.N. and Arab League joint special envoy as "an aging tourist."
"Brahimi's hands show zero accomplishments after almost a year since he took over," an al-Tawra editorial said. "Worse than that is that we now believe that his hands may have been stained in attempts to undermine the political settlements to end the Syrian crisis."
Brahimi's "assessment of the political situation in Syria" is "short-sighted," the piece said. He is a "tool to some international parties just like the United Nations and its agencies.
"Brahimi is coming back and, in his briefcase, there are requests and ideas that are not his."
Read more: Pentagon weighs how to secure Syria's chemical weapons
Another newspaper in Syria -- also state-run -- said Tuesday that Brahimi "lives off the breadcrumbs of the Qatari royal court."
At the same time, France's Ministry of Foreign Affairs sent a letter signed by 55 countries to the U.N. Security Council that appealed to the world body to oppose aggressively the actions of al-Assad's regime.
The letter also urged the International Criminal Court to pursue action against the Syrian president.
A United Nations-based, independent international commission of inquiry has found evidence of crimes against humanity and war crimes in Syria. The U.N. High Commissioner for Human Rights has repeatedly called for the Security Council to refer the situation in Syria to the ICC.
But Russia's Foreign Ministry said Tuesday in a commentary that it would not support taking the matter to the ICC.
"We believe that this idea is not properly timed and counterproductive for tackling the priority task at this moment -- early termination of bloodshed in Syria," it said in a commentary.
"We are certain that speculations over the theme of international criminal prosecution and search for culprits would merely contribute to the rival parties taking firmer irreconcilable positions and complicate the search for ways of a political and diplomatic settlement of the Syrian conflict," the Foreign Ministry said.
What's next for Syria in 2013?
CNN's Hamdi Alkhshali, Saad Abedine and Salma Abdelaziz contributed to this report.
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Syrian rebels leave their position in the northwestern town of Maaret al-Numan on Thursday, June 13. The White House said that 
Forces loyal to Syrian President Bashar al-Assad are seen near Qusayr on Thursday, May 30.
Syrian rebels take position in a house during clashes with regime forces in the old city of Aleppo on May 22.
Syrian army soldiers take control of the village of Western Dumayna north of the rebel-held city of Qusayr on Monday, May 13. Syrian troops captured three villages in Homs province, allowing them to cut supply lines to rebels inside Qusayr town, a military officer told AFP.
Rebel fighters fire at government forces in the northern Syrian city of Aleppo on Sunday, May 12.
Searchers use a flashlight as they look for survivors among the rubble created by what activists say was a missile attack from the Syrian regime, in Raqqa province, Syria, on April 25.
A Kurdish fighter from the "Popular Protection Units" (YPG) takes position inside a building in the majority-Kurdish Sheikh Maqsood area of Aleppo, on Apri. 21.
People walk past destroyed houses in the northern Syrian town of Azaz on Sunday, April 21.
Free Syrian Army fighters take positions prior to an offensive against government forces in the Khan al-Assal area, near Aleppo on Saturday, April 20.
Men inspect damage at a house destroyed in an airstrike in Aleppo on April 15.
Syrian and Kurdish rebel fighters walk in the Sheikh Maqsud district of Aleppo on April 14.
A female rebel monitors the movement of Syrian government forces in Aleppo's Sheikh Maqsud neighborhood on April 11.
A rebel runs to avoid sniper fire from Syrian government forces in Aleppo on Thursday, April 11.
Syrian rebels observe the movement of Syrian government forces around Al-Kendi hospital in Aleppo on Wednesday, April 10.
Rescue teams and security forces check out the scene of a deadly car bomb explosion in Damascus on April 8.
The fighting has taken a toll on buildings in Aleppo's Saladin district, seen here on April 8.
A Syrian rebel runs for cover in Deir ez-Zor on April 2.
A rebel checks for snipers across the street toward the Citadel in Aleppo, Syria, on Saturday, March 30, in this photo taken by iReporter Lee Harper.
A Free Syrian fighter mourns the death of a friend in Aleppo on March 30, in this photo taken by iReporter Lee Harper.
A Syrian opposition fighter runs for cover from Syrian army snipers in Aleppo on Wednesday, March 27.
A Syrian girl covers her face to protect herself from fumes as a street covered with uncollected garbage is fumigated in Aleppo on Sunday, March 24.
A Syrian man and his family drive past damaged buildings in Maarat al-Numan, on Wednesday, March 20.
Syrians carry the body of a Syrian army soldier during a funeral ceremony in Idlib province on Tuesday, March 19.
Syrian rebels take position in Aleppo, the largest city in the country, on March 11.
Syrian men search for their relatives amongst the bodies of civilians executed and dumped in the Quweiq River on March 11.
A Free Syrian Army fighter looks back as smoke rises during fighting between rebel fighters and forces loyal to Syria's President Bashar al-Assad on the outskirts of Aleppo on Saturday, March 2.
Residents read Shaam News newspapers published by the Free Syrian Army in Aleppo on March 2.
A member of the Free Syrian Army reacts to the death of a comrade who was killed in fighting, at Bustan al Qasr cemetery in Aleppo on Friday, March 1.
A rebel fighter throws a home-made grenade at Syrian government forces in Aleppo on February 16.
A member of the Free Syrian Army stands with his weapon as he looks at a rainbow in Aleppo on February 16.
A Syrian woman looks through a bus window in Aleppo on February 14.
Free Syrian Army fighters walk through a dust-filled stairwell in Damascus on February 7.
A Syrian rebel gestures at comrades from inside a broken armored personnel carrier in Al-Yaqubia on February 6.
A rebel fighter throws a hand grenade inside a Syrian Army base in Damascus on February 3.
People stand in the dust of a building destroyed in an airstrike in Aleppo, Syria on February 3.
Free Syrian Army fighters run as they enter a Syrian Army base during heavy fighting in the Arabeen neighborhood of Damascus on February 3.
An unexploded mortar shell fired by the Syrian Army sits lodged in the ground in Damascus on January 25.
Fighters from Fateh al Sham unit of the Free Syrian Army fire on Syrian Army soldiers at a check point in Damascus on January 20.
A Free Syrian Army fighter walks between buildings damaged during Syrian Air Force strikes in Damascus on January 19.
A Syrian rebel fighter tries to locate a government jet fighter in Aleppo on January 18.
Syrian rebels launch a missile near the Abu Baker brigade in Albab on January 16.
A Syrian boy walks near rubbish next to tents at a refugee camp near the northern city of Azaz on the Syria-Turkey border, on January 8.
Syrians look for survivors amid the rubble of a building targeted by a missile in Aleppo on January 7.
A father reacts after hearing of a shelling by forces loyal to Syria's President Bashar al-Assad in Aleppo on January 3.
A patient smokes a cigarette at Dar Al-Ajaza psychiatric hospital in Aleppo on December 18, 2012. The psychiatric ward, housing around 60 patients, has lacked the means to function properly since fighting broke out there in July.
Syrians mourn a fallen rebel fighter at a rebel base in the al-Fardos area of Aleppo on December 8.
Members of Liwa (Brigade) Salahadin, a Kurdish military unit fighting alongside rebel fighters, monitor the area in the besieged district of Karmel al-Jabl in Aleppo on December 6.
A member of Liwa Salahadin aims at a regime fighter in the besieged district of Karmel al-Jabl in Aleppo on December 6.
Two young boys sit underneath a washline in a refugee camp on the border between Syria and Turkey near Azaz on December 5.
The bodies of three children, who were allegedly killed in a mortar shell attack that landed close to a bakery in Aleppo, on December 2, are laid out for identification by family members at a makeshift hospital at an undisclosed location of the city.
Smoke rises in the Hanano and Bustan al-Basha districts in Aleppo on December 1 as fighting continues through the night.
Damaged houses in Aleppo are seen after an airstrike on November 29.
A Syrian rebel mourns the death of a comrade in Maraat al-Numan on November 20.
Syrians protesters stand on Assad's portrait during an anti-regime demonstration in Aleppo on November 16.
A Syrian rebel takes cover during fighting against Syrian government forces in Aleppo on November 15.
Syrian opposition fighter Bazel Araj, 19, sleeps next to his pistol in Aleppo on November 11.
A rebel fighter fires at a Syrian government position in Aleppo on November 6.
A Syrian rebel leaps over debris left in the street while running across a "sniper alley" near the Salahudeen district in Aleppo on November 4.
Rebels hold their position in the midst of a battle on November 3 in Aleppo.
A man cries while being treated in a local hospital in a rebel-controlled area of Aleppo on October 31.
A man is treated for wounds after a government jet attacked the Karm al-Aser neighborhood in eastern Aleppo on October 31.
A Syrian rebel interrogates a handcuffed and blindfolded man suspected of being a pro-regime militiaman in Aleppo on October 26.
Smoke rises from a fuel station following a mortar attack as Syrian women walk on a rainy day in the Arqub neighborhood of Aleppo on October 25.
A Syrian rebel fires at an army position in the Karm al-Jabal district of Aleppo on October 22.
A wounded Syrian boy sits on the back of a truck carrying victims and wounded people to a hospital following an attack by regime forces in Aleppo on October 21.
A man lies on the ground after being shot by a sniper for a second time as he waits to be rescued by members of the Al-Baraa Bin Malek Battalion, part of the Free Syria Army's Al-Fatah brigade, in Aleppo on October 20.
Syrian army soldiers run for cover during clashes with rebel fighters at Karam al-Jabal neighborhood of Aleppo on October 20.
Smoke rises after a Syrian Air Force fighter jet fired missiles at the suburbs of the northern province of Idlib on October 16.
A Syrian opposition fighter stands near a post in Aleppo on October 11.
A Syrian man mourns the death of his father, who was killed during a government attack in Aleppo on October 10.
A rebel fighter is carried by his friends and laid on a gurney to be treated for gunshot wounds sustained during heavy battles with government forces in Aleppo on October 1.
Syrian rebels help a wounded comrade to an Aleppo hospital after he was injured in a Syrian army strike on September 18.
Free Syria Army fighters are reflected in a mirror they use to see a Syrian Army post only 50 meters away in Aleppo on September 16.
A Syrian man carrying grocery bags tries to dodge sniper fire as he runs through an alley near a checkpoint manned by the Free Syria Army in Aleppo on September 14.
A woman walks past a destroyed building in Aleppo on September 13.
Free Syrian Army fighters battle during street fighting against Syrian army soldiers in Aleppo on September 8.
A Syrian man wounded by shelling sits on a chair outside a closed shop in Aleppo on September 4.
A woman sits in her wheelchair next to her house, damaged by a Syrian air raid, near Homs on August 26.
Members of the Free Syrian Army clash with Syrian army soliders in Aleppo's Saif al-Dawla district on August 22.
A man mourns in front of a field hospital on August 21 in Aleppo.
Wounded civilians wait in a field hospital after an air strike on August 21 in Aleppo.
People pray during the funeral of a Free Syrian Army fighter, Amar Ali Amero, on August 21.
A man cries near the graves of his two children killed during a recent Syrian airstrike in Azaz on August 20.
A Syrian woman holds her dead baby as she screams upon seeing her husband's body being covered following an airstrike by regime forces on the town of Azaz on August 15.
A Syrian rebel runs in a street of Selehattin during an attack on the municipal building on July 23.
Syrian rebels hunt for snipers after attacking the municipality building in the city center of Selehattin on July 23.
Members of the Free Syrian Army's Mugaweer (commandos) Brigade pay their respects in a cemetery on May 12 in Qusayr.
Syrian rebels take position near Qusayr on May 10.
A Free Syrian Army member takes cover in underground caves in Sarmin on April 9.
Rebels prepare to engage government tanks that advanced into Saraquib on April 9.
Men say prayers during a ceremony in Binnish on April 9.
A young boy plays with a toy gun in Binnish on April 9.
A Free Syrian Army rebel mounts his horse in the Al-Shatouria village near the Turkish border in northwestern Syria on March 16, a year after the uprising began.
Syrian refugees walk across a field before crossing into Turkey on March 14.
A rebel takes position in Al-Qsair on January 27.
A protester in Homs throws a tear gas bomb back towards security forces, on December 27, 2011.
A man stands under a giant Syrian flag outside the Umayyad Mosque in Damascus on December 24, 2011.
A member of the Free Syrian Army looks out over a valley in the village of Ain al-Baida on December 15, 2011.
Members of the Free Syrian Army stand in an valley near the village of Ain al-Baida, close to the Turkish border, on December 15, 2011.
Displaced Syrian refugees walk through an orchard adjacent to Syria's northern border with Turkey on June 14, 2011, near Khirbet al-Jouz.
A Syrian man holds up a portrait of President Bashar al-Assad during a rally to show support for the president in Damascus on April 30, 2011.
Syrians rally to show their support for President Bashar al-Assad in Damascus on April 30, 2011.
A screen grab from YouTube shows thick smoke rising above as Syrian anti-government protesters demonstrate in Moaret Al-Noman on April 29, 2011.
A screen grab from YouTube shows Syrian anti-government protesters run for cover from tear gas fired by security forces in Damascus on April 29, 2011, during the "Day of Rage" demonstrations called by activists to put pressure on al-Assad.
Syrians wave their national flag and hold portraits of al-Assad during a rally to show their support for their leader in Damascus on March 29, 2011.
A woman sits by the hospital bed of a man allegedly injured when an armed group seized rooftops in Latakia on March 27, 2011, and opened fire at passers-by, citizens and security forces personnel according to official sources.
Syrian protesters chant slogans in support of al-Assad during a rally in Damascus on March 25, 2011.
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