2) Israel feels that Iran threatens them so sooner or later it will get ballsy enough to attack. With or without help from USA. US apparently wants to stay out of it, but Israel pushes it into this war.
Many Americans are fed up with so much support for Israel. I have to admit that I am torn on this issue. Israel's position in the middle east is precarious - yet now Israel stomps around and carries a big stick, and persecutes the Palestinians cruelly, and with too much confidence, too content that the US will jump in and come to the rescue if Israel gets itself into trouble. In some ways, I feel like Israel is a skinny little kid, pretending to be a schoolyard bully, because he is friends with a REAL bully (the US) but takes that friendship for granted.