I believe he is referencing the fact that a few years back the US armed a militant group that later became ISIL, as at that point they were fighting regimes the

I believe he is referencing the fact that a few years back the US armed a militant group that later became ISIL, as at that point they were fighting regimes the US was against. It's a big part of why calls to "arm the anti-ISIL rebels!" Are so cringe worthy.