James Cunningham, U.S. ambassador in Afghanistan, says during a news event at the U.S. Embassy in Kabul, Afghanistan, on Thursday, Jan. 17, 2013, that the United States wants serious peace negotiations with the Taliban but that it has not yet been possible to get the process under way. (AP Photo/Patrick Quinn)

Photo by: Patrick Quinn

James Cunningham, U.S. ambassador in Afghanistan, says during a news event at the U.S. Embassy in Kabul, Afghanistan, on Thursday, Jan. 17, 2013, that the United States wants serious peace negotiations with the Taliban but that it has not yet been possible to get the process under way. (AP Photo/Patrick Quinn)