Major Tayseer Darwish
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US backed rebel Syrian major: 'We were promised a lot'

Rebel fighters backed by the US have told the BBC that the US-led coalition faces a backlash over its bombing campaign against Islamic State.

A number of armed groups, vetted by America to help fight against the militants, say the support they have been given is not enough.

Major Tayseer Darwish is a member of a secretive operations room run by the Friends of Syria group and rebel fighters. He told the BBC's Ian Pannell that "we were promised a lot" but "nothing has materialised".

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