about arming Syrian rebels

"Nor is the U.S. reluctance to provide more arms to “moderate” Syrian rebels really the key to the growth of ISIS in Syria or in Iraq. It’s a bit hard to believe that the jihadists who have joined up with ISIS would have been deterred by the presence of U.S.-backed forces – “Well, we were going to wage jihad to establish an Islamic State in Syria and Iraq, but the U.S. is arming moderates so I guess we’ll stay home.” "