Photo: Sasan/Middle East Images/AFP/Getty Images At the opening of the air war against Iran, the U.S. and Israel won a massively one-sided victory that left Iran’s defenses in tatters and much of its leadership dead. “We achieved air superiority within two days, if that,” says Mark Gunzinger, an analyst at the Mitchell Institute for Aerospace Studies. But just because a war starts well doesn’t mean it will end that way. “The enemy gets a vote,” as former secretary of Defense James Mattis liked