Abdullah Ghulam Rasoul spent six years in Guantanamo before convincing a U.S. military review board that he had never been a Taliban commander. In December 2007, the U.S. military released him to Hamid Karzai's government in Afghanistan, who let him go in spring 2008. Now Resoul goes by Mullah Abdullah Zakir, and is the Taliban operations chief in Afghanistan's Helmand province. He's allegedly responsible for a dramatic rise in roadside bombings. Since 2008, 44 British troops have died in such attacks and 18 have died from exchanges of fire, up dramatically from the prior year. The news may complicate Obama's plan to close Guantanamo and convince other countries to take some of its detainees.