U.S. war stocks are under strain after the Iran conflict, and the Air Force is reportedly leaning on reworked technology and a sole-source Boeing deal to keep its heaviest bunker-buster bombs in service. The focus is on the 30,000‑pound GBU‑57 Massive Ordnance Penetrator (MOP), the only conventional weapon capable of striking some of Iran’s deepest nuclear facilities. Watch for details