The rebels are all jihadis. And in addition to getting these weapons, they probably have Libyan gas shells that they passed to the rebels in Syria. They will detonate them and blame Assad.
After all, Hillary the moron just told them, “if chemicals are used, we and NATO will intervene.” So now they know exactly what they need to do.
Bingo! Plus, a Syrian intervention will serve as a nice diversion from what Obama is doing to the US and get the drones to further support him as he tries to spend America into oblivion.