What if Israel strikes Iran?

Jim Hoagland at the WaPo, here

"...So even after the Iran review is completed, don't expect it to deal forthrightly (or perhaps at all) with this core question: Can Obama's hopes for Middle East peace and fruitful negotiations with Iran survive an Israeli military strike on Iran's nuclear program, perhaps as early as the first half of 2010?

Asked whether Israeli warplanes had the range to fly around Arab-controlled airspace to hit Iran, a European official replied: "You might think not, unless you noticed the emphasis being put on Israel's in-air refueling capacity in its recent military exercises. In any event, Arab air defenses have never been a problem for Israel..............."The nightmare scenario for Obama is that Israel launches an attack on Iranian nuclear facilities that is largely unsuccessful but that provokes an Iranian missile retaliation against Israel and all-out guerrilla campaigns by Hamas and Hezbollah. Could any U.S. president, however angry, turn his back on Israel in that situation? What would happen to the U.S. mediation efforts Obama promised King Abdullah II of Jordan in their White House meeting last week?......"