“I don't have a zero option. No one has asked me to prepare a zero option. I don't recommend a zero option. So there is no zero option, but there could be a zero outcome because we can only stay here if we're invited to do so.”— Army General Martin Dempsey, speaking July 22 in Kabul, on the wisdom of leaving zero U.S. troops in Afghanistan in 2015, a possibility the White House has suggested may occur.