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

Nov 11, 2025 · 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 runaway fission …

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

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 world’s nuclear …

Sep 6, 2017 · Scientists first developed nuclear weapons technology during World War II. Atomic bombs have been used only twice in war—both times by the United States against Japan at the end of …

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

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 available for …

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 United States …

May 15, 2025 · They come under two broad categories: atomic bombs, which use power released by the splitting of atomic nuclei, and hydrogen bombs (also known as thermonuclear bombs), whose …

Nine countries possess nuclear weapons: the United States, Russia, France, China, the United Kingdom, Pakistan, India, Israel, and North Korea. In total, the global nuclear stockpile is close to …