10/15/2014 02:33 am ET Updated Oct 15, 2014

C.I.A. Study Of Covert Aid Fueled Skepticism About Helping Syrian Rebels

The Central Intelligence Agency has run guns to insurgencies across the world during its 67-year history — from Angola to Nicaragua to Cuba. The continuing C.I.A. effort to train Syrian rebels is just the latest example of an American president becoming enticed by the prospect of using the spy agency to covertly arm and train rebel groups. An internal C.I.A. study has found that it rarely works.

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