The U.S.-led air war in Syria has gotten off to a rocky start, with even the Syrian rebel groups closest to the United States turning against it, U.S. ally Turkey refusing to contribute and the plight of a beleaguered Kurdish town exposing the limitations of the strategy.
U.S. officials caution that the strikes are just the beginning of a broader strategy that could take years to carry out. But the anger that the attacks have stirred risks undermining the effort, analysts and rebels say.