You don't have any communication between the Israelis and the Iranians. You have all sorts of local triggers for conflict. Having countries act on a hair trigger - where they can't afford to be second to strike - the potential for a miscalculation or a nuclear war through inadvertence is simply too high.
Think for a moment about what Obamacare has done: The federal government has come up with its own (ever-evolving) definition of 'health insurance ' which now includes free access to sterilization contraception and certain abortifacients such as the morning-after pill.