Our planet is the closest it has ever been to a global nuclear holocaust, the scientific community has warned over the past two years.

Iran's military power and influence has been badly weakened and clashes with Israel and the fall of Bashar Assad in Syria have left it reeling.

For weeks, Iranian officials have downplayed the fall of their ally in Syria. But an important general has offered a remarkably candid view of the blow to Iran, and its military’s prospects.

North Korea is gaining crucial military experience and equipment by sending troops to Russia, a U.S. official warned the United Nations, making the regime a growing threat to neighboring countries.

North Korea test fires a ballistic missile as Blinken visits Seoul, where he warned that Putin could provide Kim Jong Un with advanced space technology.

In a wide-ranging exit interview, NPR's Mary Louise Kelly asks Central Intelligence Agency director William Burns about the resurgence of ISIS, and what's next for the intel community.

Her departure reflects a growing sense of anxiety within the Defense Department over the incoming administration and how it plans to treat the ranks of career civil servants and military flag officers.

Iran and its proxies and allies — from Syria to Lebanon to Gaza — have taken a beating in military engagements this year.

President-elect Donald Trump said at a news conference that he plans to make sweeping changes to U.S. policy when he's inaugurated on Jan. 20.