deployed two atomic bombs against the Japanese cities of Hiroshima and Nagasaki. The legacy of these weapons is defined by a stark and grim history, marked by the only two instances of nuclear warfare in human history, followed by decades of deterrence and near-misses during the Cold War.
Only Countries Nuclear Weapon Usage Facts
In August 1945, toward the end of World War II, the U. The first-ever detonation of a nuclear device, codenamed "Trinity," occurred in July 1945 in the deserts of New Mexico.
This non-use has been attributed to a combination of international treaties, the sheer destructive power of modern arsenals, and the principle of nuclear deterrence. The concern today centers not on state-to-state nuclear war between major powers, but on the potential for nuclear terrorism or the use of tactical nuclear weapons in regional conflicts involving countries like North Korea.
Only Countries That Have Used Nuclear Weapons in Warfare
Global Non-Use and Modern Proliferation Since 1945, no other nation has used a nuclear weapon in warfare. Summary of Nuclear Weapons Usage.
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