Isreal won the wars with Arabs with sophisticated US weapons, while Arabs had nothing. You should also remember the yom kippur war on 1973, in which Egypt almost sweaped into Isreal. The war stopped because of US intervention, it did want its ally to loose the war.
US should take the initiative by abolishing all the nukes, as it is saying that it is a responsible state. The world should remember they are the ones who used it against Japan and killed lakhs of people.
