A nuclear weapon [a] is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion.

It was designed for deployment on cruise missiles and is the warhead used in all nuclear-armed ALCM and ACM missiles deployed by the US Air Force, and in the US Navy's BGM-109 Tomahawk. It is essentially a modification of the widely deployed B61 weapon, which forms the basis of most of the current US stockpile of nuclear gravity bombs.

A nuclear weapon is a device designed to release energy in an explosive manner as a result of nuclear fission, nuclear fusion, or a combination of the two. Fission weapons are commonly referred to as atomic bombs, and fusion weapons are referred to as thermonuclear bombs or, more commonly, hydrogen bombs.

2024年3月29日 · Despite progress in reducing nuclear weapon arsenals since the Cold War, the world’s combined inventory of nuclear warheads remains at a very high level: nine countries possessed roughly 12,121 warheads as of early-2024.

From a high of 70,300 active weapons in 1986, as of 2024 there are approximately 3,880 active nuclear warheads and 12,119 total nuclear warheads in the world. [8] Many of the decommissioned weapons were simply stored or partially dismantled, not destroyed.

According to the March 2023 New START declaration, the United States deploys 1,419 strategic nuclear warheads on 662 strategic delivery systems (intercontinental ballistic missiles, submarine-launched ballistic missiles, and heavy bombers).

2025年1月11日 · Thermonuclear warhead, thermonuclear (fusion) bomb designed to fit inside a missile. By the early 1950s both the United States and the Soviet Union had developed nuclear warheads that were small and light enough for missile deployment, and by the late 1950s both countries had developed

4 天之前 · A mural in Tehran depicting Iran’s first hypersonic ballistic missile. U.S. officials believe Iran has the know-how to make an older-style nuclear weapon that could be quickly put together but ...

2025年2月1日 · Another tailored weapon is the enhanced radiation warhead, or neutron bomb, a low-yield (on the order of one kiloton), two-stage thermonuclear device designed to intensify the production of lethal fast neutrons in order to maximize mortality rates while producing less damage to buildings.

2022年3月22日 · Today, Russia says it has 6,257 nuclear warheads, while the United States admits to having 5,550, according to a January fact sheet released by the Arms Control Association. However, this...