NATO troops killed in Afghanistan --- KABUL — A suicide bomber killed three coalition troops near the U.S. Embassy in Kabul on Tuesday morning, and a fourth died late Monday when an Afghan soldier opened fire on NATO forces. -- The violence, the deadliest aimed at NATO troops in more than two months, underscores the continued vulnerability of international forces serving in Afghanistan. -- At about 8:15 a.m., a car packed with explosives detonated near a convoy of armored vehicles in Kabul. The blast occurred as the convoy left a heavily fortified area near the U.S. Embassy and other government buildings, witnesses and Afghan officials said. -- “It was a very powerful blast and happened just as the vehicles sped out of the embassy,” said Taj Mohammad, one of the witnesses. --Television footage of the aftermath showed mangled vehicles and coalition troops providing first aid to two soldiers lying next to the road. At least 13 Afghan civilians also were wounded, said Hashmat Stanekzai, a Kabul police spokesman. -- The Afghan Taliban asserted responsibility for the attack. The assault was the deadliest for coalition forces since July 8, when five soldiers from the Czech Republic were killed during a Taliban attack on Bagram air base, north of Kabul, according to iCasualties.org, which tracks coalition casualities. -- Although there has been a rapid drawdown of coalition forces this year, about 41,000 troops from 44 nations remain in Afghanistan. About three-fourths of them are Americans, and President Obama announced this summer that he plans to keep up to 10,000 U.S. troops in Afghanistan into 2015. - Read More, Washingtonpost