With the world's attention focused on climate change and terrorism, we are in danger of taking our eyes off the nuclear threat. But rising tensions between Russia and NATO, proxy wars erupting in Syria and Ukraine, a nuclear-armed Pakistan, and stockpiles of aging weapons unsecured around the globe make a nuclear attack or a terrorist attack on a nuclear facility arguably the biggest threat facing humanity. In , pioneering antinuclear activist Helen Caldicott assembles the world's leading nuclear scientists and thought leaders to assess the political and scientific dimensions of the threat of nuclear war today. Chapters address the size and distribution of the current global nuclear arsenal, the history and politics of nuclear weapons, the culture of modern-day weapons labs, the militarization of space, and the dangers of combining artificial intelligence with nuclear weaponry, as well as a status report on enriched uranium and a shocking analysis of spending on nuclear weapons over the years. The book ends with a devastating description of what a nuclear attack on Manhattan would look like, followed by an overview of contemporary antinuclear activism. Both essential and terrifying, this book is sure to become the new bible of the antinuclear movement—to wake us from our complacency and urge us to action.