Leon Panetta suggests it's 'pretty clear' Russia 'responsible' for Azerbaijan Airlines plane crash

Former Secretary of Defense and CIA director Leon Panetta speculated that Russian air defenses may have caused the crash of an Azerbaijan Airlines plane in Kazakhstan that killed 38 people and left all 29 survivors injured earlier this week.

"When you look at all the preliminary evidence here, I don't think there's any question, but that the Russians use some kind of air defense system that brought down that airliner," Panetta told CNN's Wolf Blitzer Friday night.

Kremlin spokesperson...