Philip Alston, a U.N. investigator on extrajudicial killings, says the United States "asserts an ever-expanding entitlement for itself to target individuals across the globe." President Obama has expanded use of drones to kill from the air in the war against al Qaeda. The CIA says there is accountability in the use of drones. (Associated Press)

Philip Alston, a U.N. investigator on extrajudicial killings, says the United States "asserts an ever-expanding entitlement for itself to target individuals across the globe." President Obama has expanded use of drones to kill from the air in the war against al Qaeda. The CIA says there is accountability in the use of drones. (Associated Press)