Yesterday, America learned that Iran conspired to launch a terrorist attack in Washington, D.C., with a planned assassination of the Saudi ambassador and bomb attacks on the Saudi and Israeli embassies. U.S. authorities disrupted the plot and have brought charges against the men who planned to carry out the attack, but the audacity of Iran’s actions highlights a disturbing truth: The Obama Administration has done far too little to deter state-sponsored terrorism, and it has utterly failed to confront the Iranian threat.