The Trump Administration warned Iran about what it says are violations of the 2015 nuclear agreement.

President Donald Trump is bringing politics into the National Security Council by offering Steve Bannon a seat at the table.

According to NBC News, Gen. James Mattis got the cut from Lt. Gen. Mike Flynn.

PolitiFact answered five common questions about defense spending. Read our breakdown of their findings.

For the new secretary of defense, his ability to stand up against pressure from the White House is most important.