Shortly before 1 p.m. on Tuesday, having just received a classified briefing from the director of the CIA in the basement of the Capitol, two Republican senators stepped to a crowd of cameras and reporters. With a few pointed words, the pair blew up the Trump administration's efforts to minimize the political damage stemming from journalist Jamal Khashoggi's murder.

New satellite images obtained exclusively by CNN reveal North Korea has significantly expanded a key long-range missile base located in the mountainous interior of the country, offering yet another reminder that diplomatic talks with the US have done little to prevent Kim Jong Un from pursuing his promise to mass produce and deploy the existing types of nuclear warheads in his arsenal.

Earlier this summer, National Security Council experts were working to implement harsh penalties against Chinese technology behemoth ZTE when President Donald Trump caught them off-guard with a tweet about making deals with the foreign company.

Years after defecting from Russia and resettling in the US, former KGB officer Alexander Zaporozhsky was lured back to the country he had once betrayed. The CIA warned him not to go.

President Donald Trump sought to project momentum into his dealings with North Korea on Wednesday, saying a summit between leader Kim Jong Un and South Korean President Moon Jae-in boded well for peace despite little indication that the two leaders had made any real progress toward denuclearization. In contrast, lawmakers and experts urged caution.

A former nuclear launch officer is warning that President Donald Trump's nuclear weapons strategy is encouraging an arms race that could increase the chances of a catastrophic nuclear war.

As the number of people displaced by war and famine surges, the Trump administration is capping refugee admissions at the lowest level since 1980, Secretary of State Mike Pompeo announced Monday. It's the second year in a row the administration has set the cap at a record low.

The US Air Force wants to add more bombers, fighters, tankers and other front-line units by 2030 to confront rising threats from China and Russia, senior officials said Monday, outlining a proposal for what the service will need to fight and win future conflicts.

Retired Adm. William "Bill" McRaven resigned from the Pentagon's Defense Innovation Board last month, just days after issuing a stunning rebuke of President Donald Trump's decision to revoke the security clearance of former CIA Director John Brennan, the Pentagon confirmed Thursday.

Two US F-22 "Raptor" fighter jets intercepted two Russian TU-95 bombers on Tuesday, according to a statement released by North American Aerospace Defense Command.

Army Spc. Sarah Reyes' instincts had always prompted her to run toward danger, not away from it.

New satellite images show North Korea has made rapid improvements to the infrastructure at its Yongbyon Nuclear Scientific Research Center -- a facility used to produce weapons-grade fissile material, according to an analysis published by 38 North, a prominent North Korea monitoring group.

With a sudden flurry of plans for high-level contacts between Washington and Moscow, President Donald Trump appears to be telegraphing an upcoming meeting with Russian leader Vladimir Putin -- a controversial push to engage the Kremlin at a time when relations between the US and key European allies are rapidly souring.

North Korean leader Kim Jong Un ended a celebratory visit to China's President Xi Jinping on Wednesday with tea, praise, handshakes -- and a message for the US.

President Trump's secretary of state has dubbed Julian Assange's group WikiLeaks a "hostile intelligence service." Trump's national security adviser once called on the US to use WikiLeaks for "target practice." And his attorney general asserted that the arrest of Assange remains a "priority" for the United States.

The US, UK and France launched strikes against targets at three sites in Syria in the early hours of Saturday morning, following a week of threats of retaliation for an alleged chemical weapons attack on civilians in the Damascus enclave of Douma.

The United States combined with the armed forces of the United Kingdom and France early Saturday to carry out airstrikes against the chemical weapons facilities maintained by the regime of Syria. Here are some of the weapons they used:

Top administration officials on Saturday rallied behind President Donald Trump's declaration of "mission accomplished" in Friday night's strike on three Syria targets in response to an alleged chemical weapons attack on civilians in a Damascus suburb.

After more than two decades of development and testing, Lockheed Martin's F-35 fighter jet has made its combat debut.

The White House warned Beijing on Thursday that there will be consequences for its growing militarization in the South China Sea, following reports of missiles being deployed to three of the country's outposts in the disputed region.

Wednesday's crash of an Air National Guard cargo plane in Georgia killed nine service members, bringing the number of US service members who've died in noncombat-related wrecks of military aircraft to at least 27 this year.

The modified Boeing 757 had taken off from Andrews Air Force Base outside Washington late Monday night, bound for North Korea, when Secretary of State Mike Pompeo came to the back of the plane.

President Donald Trump spent roughly 10 minutes of an hourlong speech Thursday night in Indiana telling the story of how he saved nearly $999,800,000 on controversial plans to move the US Embassy in Israel from Tel Aviv to Jerusalem -- a claim he has made before in the months leading up to the facility's opening on Monday.

Defense Secretary James Mattis may have come to terms with President Donald Trump's decision to quit the Iran nuclear deal, but he suggested the administration is still grappling with how to define US policy on countering Tehran following public calls for regime change from national security adviser John Bolton and Rudy Giuliani.

The US, South Korea and Japan agreed this week to shift a planned flight of at least two nuclear-capable B-52 bombers so they would not fly over the Korean Peninsula, according to two US defense officials.

Defense Secretary James Mattis is doing his best to downplay notions that he is concerned about working with President Donald Trump's hawkish new national security adviser John Bolton despite signs of a shifting power dynamic at the highest levels of the administration and strong indications that the two men could clash over key issues like North Korea and Iran.

Defense Secretary James Mattis is keenly aware of John Bolton's rapid ascension within the White House and is making a concerted effort to make nice with President Donald Trump's new national security adviser amid a shifting power dynamic at the highest levels of the administration.

Defense Secretary James Mattis decided Thursday that the best way to break the ice during his first ever meeting with President Donald Trump's new national security adviser John Bolton was with a joke.

President Donald Trump said Tuesday that North Korean dictator Kim Jong Un -- the man he once mocked as "Little Rocket Man" -- "has really been very open and I think very honorable based on what we are seeing" as the two gear up for an anticipated face-to-face meeting in the coming weeks.

The US Navy's most expensive warship just got even pricier as the service says it needs to spend an additional $120 million on the new USS Gerald Ford aircraft carrier to "correct deficiencies identified during testing" -- an amount that will cause the ship's overall cost to exceed a $12.9 billion cap set by Congress.

Adm. Harry Harris, the top US military official overseeing operations across Asia who had been tapped as ambassador to Australia, is likely to be named instead as US ambassador to South Korea, according to two sources with knowledge of the matter.