KABUL, Afghanistan – The U.S. government will spend $511 million to expand its embassy in Kabul, the U.S. ambassador said Wednesday, describing the work as a demonstration of America's long-term commitment to Afghanistan. "We make this commitment by commemorating the recent award of a $511 million contract to expand the U.S. Embassy here in Kabul," Ambassador Karl Eikenberry said during a ceremony at the construction site that marked the formal announcement of the contract. "We're going to get a day when that embassy's up and there's not going to be these barriers out there, there's no barbed wire, there's not...