Professor likes to play the literal card, much of the time....this being an example, where he implies that we've said Obama is the cause of everything bad, such as in Syria. No one is making that claim. The claim is that his foreign policy has been so abysmal, that policies put forth by this administration have had intimate repercussions that have led to the middle east being such a powder keg, be it Syria, Iraq, Afghanistan, Iran, North Korea, China, etc., etc., etc.
In other words, No one is saying that "Obama is responsible for the Syrian Civil War". But his polices have directly exacerbated the situation, which is the point everyone is making