Iraq to the west, Afghanistan to the east, and our Naval presence in the Persian Gulf to the south. Iow, the U.S. is in a far better position to deal a crippling blow to Iran's nuke facilities than is Israel, who'd have a much longer trip (flying over several Arab countries) requiring a massive refueling effort. (Iran's nuke facilities are spread out over their entire country). In addition, we have the superior weaponry.
If this is going to be done it's going to be done by the U.S.
" If this is going to be done it's going to be done by the U.S."
If you mean Bush, forget it.