The United States' use of unmanned drones to kill terror suspects was opposed by the majority of voters in 17 of 21 countries polled for a Pew Research Center survey on the U.S. image abroad. (Associated Press)

The United States' use of unmanned drones to kill terror suspects was opposed by the majority of voters in 17 of 21 countries polled for a Pew Research Center survey on the U.S. image abroad. (Associated Press)