Gunmen in Afghan uniform kill US soldier

The two gunmen wearing Afghan National Army uniforms fired on NATO troops at a base in Paktia province of eastern Afghanistan.

Two gunmen wearing Afghan army uniforms killed a U.S. soldier and wounded two others Tuesday, hours after Afghanistan's defense minister stepped down following a weekend no-confidence vote in parliament.

The exit of Defense Minister Abdul Rahim Wardak leaves a vacancy at the helm of the ministry that has overseen rapid expansion of the nation's army. Afghan soldiers are increasingly taking their positions on the front lines of the war as foreign combat troops withdraw.