Afghanistan Attack: 6 NATO Troops Killed Near Bagram Airbase

A suicide bomber drove a motorcycle into a joint convoy of U.S., NATO and Afghan forces on Monday, blowing himself up and killing six Americans, a brutal sign of deteriorating security in a region where Western troops are trying to help locals overtake the Taliban. The explosion marked the deadliest day for American troops in Afghanistan since an October helicopter crash, and the worst attack on Americans since six died in a July 2012 roadside bombing, according to the website iCasualties. The Taliban posted a message on Twitter claiming responsibility for Monday's attack, which officials said targeted a routine security patrol outside Bagram Airfield north of Kabul around 1:30 p.m. local time. Another two Americans and an interpreter were injured, U.S. officials said.