Nuclear Weapons Fact Sheet

Seventy years after the U.S. devastated Hiroshima and Nagasaki with atomic bombs, and 20 years after the end of the Cold War, the world still teeters on the brink of nuclear catastrophe.  Even one nuclear weapon can kill millions of people. An exchange of 100 Hiroshima-sized bombs could put a billion people at risk of death from famine. Use of 1,000 nuclear weapons—5 percent of the global arsenal—would make the planet uninhabitable. And nuclear weapons do nothing to protect us from the real threats we face.