Strategic nuclear weapons are targeted against civilian, industrial, and military infrastructure, while tactical nuclear weapons are intended for battlefield use.

Jan 2, 2026 · Atomic bombs work with nuclear fission. Two subcritical masses of uranium or plutonium are quickly put together to form a critical mass —that is, enough material to start a …

Jan 15, 2024 · Interactive nuclear explosion simulator with scientific accuracy. Comprehensive nuclear education covering nuclear weapons, nuclear technology, nuclear policy, and nuclear …

Jun 18, 2025 · Nine countries currently either say they have nuclear weapons or are believed to possess them. The first to have nuclear arms were the five original nuclear weapons states — …

Explore research and data on nuclear weapons. By Bastian Herre, Pablo Rosado, and Max Roser. This page was first published in August 2013 and last revised in February 2024. The …

At the dawn of the nuclear age, the United States hoped to maintain a monopoly on its new weapon, but the secrets and the technology for building the atomic bomb soon spread. The …

Mar 26, 2025 · Combined, the United States and Russia now possess approximately 87 percent of the world’s total inventory of nuclear weapons, and 83 percent of the stockpiled warheads …

Under the Non-Proliferation Treaty (NPT), the United States, Russia, the United Kingdom, France, and China are recognized "nuclear-weapons states" (NWS). They are also the five permanent …

Comprehensive overview of the United States's nuclear weapons program. Detailed data on warhead inventory, deployment status and nuclear capabilities.

Jan 2, 2026 · When a nuclear weapon detonates, a fireball occurs with temperatures similar to those at the center of the Sun. The energy emitted takes several forms. Approximately 85 …