It seems to me that the extremists on both sides want war. One problem with war against Iran is that it would probably be more costly than Iraq, both financially and in terms of ruining millions of lives. The Israelis and Saudis and their allies want the U.S. to take military action. There are lots of military options, but they all would cost hundreds of billions of dollars and too many lives. It seems to me that Obama's next move should bring the key players together, first in secret and then in public. Everyone has something to win that would not hurt anyone else, and they are all spending hundreds of billions of dollars on "defense" to be able to destroy their respective enemies. Obviously, such a war could not be won -- there would only be degrees of losing. This reminds me of the episode of the original Star Trek where the people with black and white faces exterminated each other.
To me the Sunnis, Sunnis and Jews are all Old Testament religions and it's irrational for them not to be friends.