Muslims do not under any circumstances cause harm to other Muslims. Obama figures Americans are idiots and will never figure out that he is doing everything he can to destroy America and further Islamic domination of the world. Or didn't you notice what happened in Egypt?
Actually, Muslims kill each other all the time: Shiites and Sunnis kill each other, they both kill Allawites and Sufis, etc.
But Muslims will drop all their inter-Muslim hostilities immediately for a chance to kill infidels, as we are seeing. Obama is a sort of “generic” Muslim, that is, he’s probably not a Shiite or a Sunni or anything else definable. The most he could be would be more in the Black Muslim mold, which is a race-based multi-Islamic syncretist movement considered unorthodox by other Muslims. However, like all other Muslims and Muslim sympathizers (including the many in our own State Department, such as John Brennan, who may actually be a Muslim convert), he agrees that he hates the infidel and wants Islam to dominate the world.
He usually doesn’t say it that openly when he’s in the US, where instead he goes for the black part of Black Muslim, but he certainly has no hesitation about saying it in other contexts. Our press just blithely ignores it, of course.
I didn't think the last sentence of my post needed a sarc tag, but I guess it did.