I believe Obama can win his showdown with Netanyahu, win it decisively, and in so doing forever transform the relationship between the United States and Israel. But he can’t do it without laying his cards out very clearly, in a major speech, probably a televised speech. The points made would resemble those suggested in a seminal article by Robert Merry in The National Interest two and a half years ago. He would have to explain that the United States’ national interests on Iran have diverged from those of Israel, and why, and iterate that his constitutional duty is the protection of America’s national interest. He could explain that a war against Iran would quadruple the chaos in the Middle East, abort the economic recovery, and sever the United States both from its allies in Europe and its more ambivalent strategic rivals/partners, Russia and China. The only countries that would be pleased would be Israel and the Saudi princes. The American military, exhausted from 15 years of war, would face another 15 years of occupation duty. The jihadist Sunnis, ISIS and all the rest, Iran’s fiercest enemies, would of course be delighted at the destruction of the Shi’ite regime they view as apostate. But who else would be?