
This is The Bomb That Ended a War—and it was made in just 4 weeks. Let me explain. In the final days of the Gulf War in 1991, U.S. forces needed a way to destroy Iraq’s underground bunkers, fortified deep beneath the desert and immune to existing weapons. So, engineers took surplus artillery barrels, packed them with explosives, added laser guidance, and created the GBU-28—a 5,000-pound bunker buster that is capable of smashing through 20 feet of concrete or 100 feet of earth like a jackhammer. Rushed from concept to combat in under 30 days, it was dropped just hours before the war ended, proving that the fastest-built weapon can sometimes deliver the final blow. But the question can GBU-28-a destroy Iran's new bunkers?