To give the green light for a military strike against Iranian nuclear facilities, Prime Minister Benjamin Netanyahu requires evidence of a clear and present danger; the assurance of the Israel Defense Forces that it can do the job; domestic support; and also the consent of President Obama, who learned from his predecessors in the Bush family that you should only go to war in the Persian Gulf three years into your presidential term, after congressional elections. Tehran is in the crosshairs, but not before 2011.