Israel, realizing it has no friend in Obama, repeatedly stated during Def Sec Gates's just concluded trip to Jerusalem that no option is off the table concerning stopping Iran from obtaining nuclear weapons. In other words, President Obama can play diplomat but Israel is a nation of adults and can't afford any margin of error with a threat to its existence like Iran.
Relations between the US and Israel are dreadful: have they ever been worse? Click on the title of this post to read the WSJ piece on what happened during Gates's visit. Go here to read the editor of Haaretz say plainly that Obama has lost the confidence and trust of virtually all Israelis (nicely done Barack!).
Then go here to read Rick Richman's analysis of it posted at Contentions.