The Israelis are undoubtably being restrained by the US from handling this problem on their own and thus the comlaint that the US is not doing enough. The US prime concern is not anti-american sentiment but lack of oil. With China and India on the rise economically, the US does not want to be squeezed on this product that makes the world go round. Their interest in Israel is that there be a modern non-dictatorial government in the oil region on whom they can rely. The US is definitely not the world police coming to the aid of Israel. When the US election next year brings in the Democrats, Israel may decide to deal with Iran on its own since US 'help' will then dry up. If that happens, several Arab country leaders will secretly blessing Israel since they also don't want a nuclear Iran. If that happens, the US may regret that they didn't nuke the Persians back to the stone age themselves, (not a long journey), and seize all their land and resources.
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)
from the article: Israeli official: U.S. is not doing enough on Iran nukes