Terrorism

The Iraqi offensive to retake Fallujah imperiled thousands of trapped civilians in the ISIS stronghold, according to the UN.

Clint Romesha joined the Army at age 18 and ended up serving in Kosovo, Iraq and Afghanistan.

Donald Trump said he would be looking for new partners, including Russia, in a super-charged campaign to defeat ISIS.

ISIS is "dead set" on using chemical weapons in the defense of Mosul, a Pentagon spokesman said Monday.

The first U.S. service member was killed in fighting against the Islamic State in Syria.

In an interview set to air this week, Bill O'Reilly asks Trump why he respects Russian President Vladimir Putin.

The chairman of the Senate Armed Services Committee said he sees no need to send U.S. ground troops into Syria to recapture...

Cyber attacks that hit 12 countries across Europe and Asia Friday involved a leaked hacking tool from the NSA.

Top aides have told various news outlets that roughly 3,500 to 5,000 additional U.S. troops are needed in Afghanistan.

U.S. troops have in custody a U.S. citizen accused of fighting for ISIS in Syria.