BEST SOLUTION:

One country, ANY country, just bitch slap the fuck out of iran in the middle of the night - low level nuke on the power plant or whatever it takes - then NOBODY take credit for it, iran can hop around pissed off all they want but cant do shit about it if NOBODY SAYS "YEAH, I DID IT BITCH, WATCHA GONNA DO?" there are quite a few stealth techniques that could pull it off, and that yappy little dog won't be able to justifiably point a sure finger at the one who did it. "what??? nope...wasn't me!"