In Jerusalem, Mitt Romney did a great service—not only to his own campaign—but to American diplomacy in the Middle East.
Romney served notice to the Iranians that a President Romney would follow a tougher line than a President Obama. He thus acted as "bad cop" to the administration's "good cop," intensifying pressure on the Iranian regime to do a deal now—before the next administration offers yet tougher terms.
Bonus point: Romney stated in Jerusalem the blunt fact that Jerusalem is Israel's capital.
A good day.