Back in January Obama suggested to David Remnick that trying to arm and shape a "moderate" opposition to Assad was futile:
... I asked Obama if he was haunted by Syria, and, though the mask of his equipoise rarely slips, an indignant expression crossed his face. “I am haunted by what’s happened,” he said. “I am not haunted by my decision not to engage in another Middle Eastern war. It is very difficult to imagine a scenario in which our involvement in Syria would have led to a better outcome, short of us being willing to undertake an effort in size and scope similar to what we did in Iraq. And when I hear people suggesting that somehow if we had just financed and armed the opposition earlier, that somehow Assad would be gone by now and we’d have a peaceful transition, it’s magical thinking.
“It’s not as if we didn’t discuss this extensively down in the Situation Room. It’s not as if we did not solicit—and continue to solicit—opinions from a wide range of folks. Very early in this process, I actually asked the C.I.A. to analyze examples of America financing and supplying arms to an insurgency in a country that actually worked out well. And they couldn’t come up with much. We have looked at this from every angle.
More recently, he told members of Congress that the notion that the U.S. could have conjured an effective moderate opposition was "a fantasy." Now, though, as he told Chuck Todd in an interview airing today, his nascent strategy in Syria depends on building such an opposition. When Todd challenged him as to how ISIS could be defeated in Syria without U.S. troops, here was his response: