The national security adviser has been agitating for a war on Iran for two decades, and if he's not reined in, he could soon get his way.
The president's new doctrine with 2020 nearing is “Let Trump be Trump."
In his first visit to troops in a troubled region, the president tells service members at an air base, "We're respected again as a nation."
Patrick Shanahan will take over as acting secretary to cover the accelerated departure.
Brett McGurk follows Defense Secretary Jim Mattis out the door in protest of the president's abrupt decision to withdraw troops.
Speaking on condition of anonymity, officials reveal the president took action without consulting his allies or national security team.
Jim Mattis, perhaps the most respected foreign policy official in Trump's administration, will leave by the end of February.
By cozying up to smaller nations in the region, the defense secretary is signaling how intensively the Trump administration is trying to counter China’s military assertiveness.
Jim Mattis says there are too few women in the infantry ranks to provide enough data to determine how they're doing.
The defense secretary condemns Russia's efforts to build opposition to an upcoming vote that could pave the way for the Balkan nation to join NATO, a move Moscow opposes.