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Most analysts think President Obama went to Israel in a public relations effort to smooth relations between the two countries. He wasn’t aiming for any breakthroughs in the peace process, and tried to dampen expectations in advance. The visit may have started out that way, but by the end I think something significant did happen. There are signs President Obama and Prime Minister Netanyahu have come to some sort of private understanding over Iran. I think Obama gave Netanyahu a green light to do whatever Israel has to do to stop Iran. America will give Israel the advanced weapons it needs for a preemptive strike against Iran’s nuclear sites, but will not join in that fight. Obama said, “we’ve got your back,” but did not say "we’ll be with you shoulder to shoulder should...