The realpolitik ghoul reason would be that they're trying to start a big enough war that the only way the US can secure its interests in the region is to get directly involved, saving Israel from the consequences of its other aggressions.

But I don't think it's actually realpolitik ghouls in charge, I think they've just got nazis at the helm, and nazis think that all problems can be solved by attacking the weak, and all people are weaker than them.