Obama is flat out lying. ..
The first Syrian people to rise up against the Assad regime and get organized was the FSA (Free Syrian Army).
It was grass roots rebellion composted of average citizens who wanted to oust Assad and transform Syria into a secular democracy.
They made great progress in the first 2 years with the lite weapons they possessed. But Assad's tanks and jet planes were difficult to defeat and the FSA started to lose ground.
The FSA begged the Obama administration for heavier weapons to defeat Assad's formidable military but were turned down repeatedly.
Once the FSA started losing most of the battles and Assad's army advanced. That's when Jihadist's from around the world started to arrive and took control of the rebellion.
That´s not exactly what happened. Syria was almost taken by surprise by an army that seemed to appear from nothing, just like it happened in Libya. Once the SAA, fragmented and shocked, got back to an organized and coordinated action, it started lead its trumps, able to rebuff the final advance of the FSA under terrible conditions.
What Obama says is that there was no secular resistance against Assad, pointing out that even moderate forces (moderate = Non-jihadist Islamist) were not (were not = not even moderate powers exist anymore) able to take over Syria.
The side of Assad is the secular side, hell breaks out, if Assad falls.
The FSA joined a coalition of terror as it saw that is has no to little support of the Syrian population (also due to its extremist nature) and proved that it is nothing but a bunch of Islamist terrorists looting the country.