The man who gave classified documents to reporters, making public two sweeping U.S. surveillance programs and touching off a national debate on privacy versus

President Barack Obama on Thursday defended America's controversial drone attacks as legal, effective and a necessary linchpin in an evolving U.S.

With Congress on break, the White House has been fighting a different battle this week as threats of an attack from North Korea increase.

All eyes are on North Korea after recent threats of attacks on the United States. But how many of the threats should be taken seriously, and what can North

A mortar shell explosion killed eight U.S. Marines and injured seven more during mountain warfare training in the Nevada desert.

Ten years and $60 billion in American taxpayer funds later, Iraq is still so unstable and broken that even its leaders question whether U.S. efforts to rebuild

Chuck Hagel was sworn in Wednesday as defense secretary — President Barack Obama's third in just over four years and the first who really wanted one of

The Senate has voted to confirm Chuck Hagel to be the nation's next defense secretary.

Defense Secretary Leon Panetta told Congress on Wednesday that if automatic government spending cuts kick in on March 1 he may be compelled to furlough the

Cyberattacks that stole massive amounts of information from military contractors, energy companies and other key industries in the U.S. and elsewhere have been

Republican opponents are sending signals that Chuck Hagel's bid to become defense secretary will probably come to an up-or-down vote soon in the Senate.

By delaying a confirmation vote on Chuck Hagel to be defense secretary, Senate Republicans have forced Leon Panetta to remain on the job he is eager to give

A bitterly divided Senate panel has voted to approve the nomination of Chuck Hagel to be the nation's defense secretary.

Still to be decided: how many troops will remain beyond 2014, when the U.S.-led combat mission is scheduled to end.

Defense Secretary Leon Panetta, in lifting a ban on women serving in combat, said women have become integral to the military's success and have shown they are