The US's Secretary of State John Kerry and its UN ambassador, Samantha Power have been pushing for more assistance to be given to the Syrian rebels. This is despite strong evidence that the Syrian armed opposition are, more than ever, dominated by jihadi fighters similar in their beliefs and methods to al-Qa'ida. The recent attack by rebel forces around Latakia, northern Syria, which initially had a measure of success, was led by Chechen and Moroccan jihadis.
http://www.independent.co.uk/voices/comment/mi6-the-cia-and-turkeys-rogue-game-in-syria-9256551.html