I did date an Israeli woman for 4 months when I was in California, she had served in the Military over there as well. Amazing woman and very strong. Israelis have no choice but to be tough.
Which begs the question, can they take out Iran's nuclear facilities without us?
Probably, but not as easily because we have planes the can carry the bigger bunker busting bombs. Of course that still means conventional weapons, even if very big and destructive ones. Our lack of interest might force Israel into using a nuclear strike as a first strike. Not just one, but multiple nuclear strikes. The bunkers hiding Iran's nuclear weaponry is said to be numerous and linked by a vast underground highway network of tunnels.
Newt Gingrich nailed it when he said that our abandonment of Israel pushes the world much closer to nuclear war.