A man navigates the rubble of a building at Shahid Beheshti University in Tehran after it was targeted by U.S. and Israeli airstrikes, on April 4. | ARASH KHAMOOSHI / THE NEW YORK TIMES WASHINGTON – Since the Iran war began in late February, the United States has burned through around 1,100 of its long-range stealth cruise missiles built for a war with China, close to the total number remaining in the U.S. stockpile. The military has fired off more than 1,000 Tomahawk cruise missiles, roughly 10 times the number it currently buys each year. The Pentagon used more than 1,200 Patriot interceptor missiles in the war, at more than $4 million a pop, and more than 1,000 Precision Strike and ATACMS ground-based missiles, leaving inventories worrisomely low, according to internal Defense Department estimates and congressional officials. The Iran war has significantly drained much of the U.S.…