They want to ensure that as many Afghans as possible can vote in next week's presidential polls.
Supporters say it's time to surge, Iraq-style. Opponents say the US should wait to see if the extra 21,000 troops already on the way have an effect.
Rolf Mowatt-Larssen, a former CIA counterterrorism expert, lays out his ideas on how to prevent the spread of nuclear materials on the black market – including the controversial 'Armageddon test.'
Human rights lawyers say the US should intervene to safeguard the Iranians at Camp Ashraf, which was raided by Iraqi security forces July 28.
The national security adviser said on Sunday that new strategies need time to work. But the US will not stay 10 years.
The Pentagon doesn't know. But it's the first such incident in nearly 10 years, suggesting that the Russian military is flexing its muscle.
Marines banned social networking sites from their computers Tuesday due to security concerns, and the Pentagon announced a policy review. But Pentagon's top officer will still tweet.
The Pentagon once took the unprecedented step of switching Capt. 'Scott' Speicher's status from 'killed in action' to 'missing-captured,' thinking he was alive.
More than 100,000 veterans have already been approved under the bill taking effect Saturday. Are campuses prepared?
Sgt. 1st Class Jared Monti was killed in a firefight in Afghanistan. He is the second service member to receive the military's highest honor for action in Afghanistan. But the award was given 246 times in Vietnam.
The 22,000 additional soldiers are expected to ease the transition from the war in Iraq to the one in Afghanistan.
Pfc. Bowe Bergdahl is only the second American service member taken hostage in Afghanistan since 2001. Soldier abductions have been rare in Iraq, too.
In a speech Thursday, the Defense secretary reiterated his determination to limit production of the F-22 stealth fighter. But lawmakers of both parties are fighting him.
A new study examined multiple deployments, enlistment policies, and exposure to intense combat as possible factors.
The head of the Missile Defense Agency suggests the plans could be altered, echoing President Obama's desire to compromise with Russia.
The service is putting more pilots behind a joystick to fly the unmanned planes crucial to today's wars.
As fighting intensifies in Afghanistan, July fatalities so far are higher than for all of June.
The deployment will include four brigades aimed at training and advising Iraqis – a nod to America's slow pullback from the front lines.
Command Sgt. Maj. Teresa King is first woman to head Army's only drill sergeant school.