On Senator Graham Saying that We Need to Topple Assad in Syria

I am getting so sick of this Graham bozo. a) It isn't our job to topple other nations' leaders (both from a moral and strategic perspective) and b) it's Assad and his henchmen who are currently fighting ISIS (the worst terrorist group ever, we're told), and so why in the hell would we even consider taking down a guy who's doing us a huge favor? I mean, I know that guys like Graham and McCain are basically on a slow burn with stuff like this in that they always seem to want to shoot and shoot some more but this was such a stupid suggestion that even Obama can probably rebut it.