Military leaders have set aside $154 million for the department's new Cyber Command.

The report from Brookings highlights the difficulties of accomplishing Obama's goal of removing Syrian President Bashar Assad from power.

The commander of U.S. forces in Afghanistan will try to assuage lawmakers’ concerns this week after a rocky period for American and coalition forces in the country.

Gen. John Allen and Defense Department policy Undersecretary James Allen will appear before the House Armed Services Committee on Tuesday, and its Senate counterpart on Thursday.

Allen and Central Command chief Gen. James Mattis will testify Wednesday before the House Appropriations subcommittee on Defense.

Romney Sunday blamed deteriorating conditions in Afghanistan on the president's foreign policy.

Many Republicans are hesitant to align with Sen. John McCain’s aggressive stances on Afghanistan and Syria.

Rep. Michele Bachmann and Sen. Rand Paul called on Secretary of State Hillary Clinton to keep Egypt from foreign aid.

U.S. officials identified the alleged shooter as Staff Sgt. Robert Bales.

Brad McKeon, a former national security adviser for Vice President Biden, will serve as a national security adviser to President Obama, the White House announced Friday. 

McKeon will be the deputy assistant to the President and executive secretary and also chief of staff of the National Security staff. McKeon's new job was previously held by Nate Tibbits. 

The Navy will double the number of mine-hunting ships patrolling the Strait of Hormuz, a key waterway near Iran.