R_L,
He's condemning the policy, not condoning it and goes on to explain the thinking behind it here:
". . . One of the things that we did as we as we allied ourselves with Al Qaeda, and on and off with ISIS; I mean, we fought ISIS in a very serious way, but at the same time, we often employed them to use against the Syrian government. So it’s kind of a love-hate. But we have always worked with the terrorists. They were the core. . ."
This really ought not to surprise you if you've followed any of these conflicts. After all, if Al Quada and ISIS terrorists are actively engaged in the war in Syria, then they pose no threat to U.S. / western citizens and interests elsewhere. Besides which, what's the worst that can happen? They get killed. So, your enemy in normal times gets killed fighting a proxy war on your behalf. That's a fantastic win : win situation for the U.S. - so it makes absolute sense to use them. Morally and ethically reprehensible yes - but morality and ethics have always been conspicuous by their absence from U.S. foreign policy.
Tim.