C.I.A. Is Disputed on Civilian Toll in Drone Strikes

Others who question the C.I.A. claim include strong supporters of the drone program like Bill Roggio, editor of The Long War Journal, who closely tracks the strikes.

“The Taliban don’t go to a military base to build bombs or do training,” Mr. Roggio said. “There are families and neighbors around. I believe the people conducting the strikes work hard to reduce civilian casualties. They could be 20 percent. They could be 5 percent. But I think the C.I.A.’s claim of zero civilian casualties in a year is absurd.”