In the New York Times article 12 Americans Killed as Blast Hits Bus in Afghanistan, Rod Nordland writes about a Taliban suicide car bomber killing 12 Americans. The bombing was the single deadliest assault on Americans in Kabul since the war started.

http://www.nytimes.com/2011/10/30/world/asia/deadly-attack-strikes-nato-bus-in-kabul.html?_r=1&src=un&feedurl=http%3A%2F%2Fjson8.nytimes.com%2Fpages%2Fworld%2Fasia%2Findex.jsonp