U.S. officials say Russia could be behind a passenger plane crash in Kazakhstan that left dozens dead on Christmas Day. U.S. officials say it looks like the plane was hit by a Russian air defense system,

( NewsNation) — A former NATO ambassador says Russia will likely never take responsibility for striking down an Azerbaijan Airlines plane that crashed in Kazakhstan on Christmas Day, killing 38 of the 67 people on board.

Russian aviation authorities said the Azerbaijan Airlines plane had hit a flock of birds. But some experts cast doubt on that account, pointing to footage showing apparent holes in the fuselage.