Terrorism

U.S. and Russia won't coordinate airstrikes against the Islamic State in Syria after the Russian airliner crash.

Russian President Vladimir Putin warned of "serious consequences" after a Turkish F-16 fighter jet shot down a Russian ground...

The four Marines and a sailor killed by a gunman during a July mass shooting in Chattanooga, Tennessee, will receive the...

The Pentagon's budget proposal included a 1.6 percent pay increase, new spending to counter Russia and China, and development...

The U.S. will hold for about a month captured ISIS leaders for interrogation before turning them over to local authorities.

Islamic State's information office in Iraq released a slick pictorial report on Saturday showcasing an advanced new tool...

Carter secured pledges from allies in the U.S.-led coalition against ISIS to do more but the allies were short on specifics.

Photos appeared to show U.S. Special Forces troops alongside Syrian rebels, but the Pentagon denied they were on the front...

Airstrikes, mostly from drones, have caused the deaths of up to 116 civilians outside the war zones, the White House said...

Turkey sent mixed signals Friday on its intentions as Turkish forces crossed into Syria to take the border town of Jarablus.