Defense

Could the US Stop Nuclear Weapons?

The first attempts at building a nuclear missile defense program started up almost as soon as intercontinental missiles were invented in the 1950s, though most of those projects were put on hold in 1972, after the U.S. and the Soviet Union signed the Anti-Ballistic Missile Treaty, which limited the number of missiles each side could retain. A number of wacky ideas have been proposed over the years, including Operation Argus, which aimed to create a protective radiation belt above Earth by detonating a nuclear weapon in the atmosphere, and Project Seesaw, which explored using particle beams to zap nukes, according to "The Imagineers of War: The Untold Story of DARPA, the Agency That Changed the World," (Knopf, 2017).