On Thursday, a former top military aide to President Obama expressed doubts about the U.S. drone war, saying it could be fueling extremism. Speaking in Chicago, General James Cartwright, former vice chair of the Joint Chiefs of Staff, said: “If you’re trying to kill your way to a solution, no matter how precise you are, you’re going to upset people even if they’re not targeted.” Cartwright also expressed doubts that problems with the drone program could be fixed by moving it “from one part of the government to another.”