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  • July 1, 1968 - The Treaty on the Non-Proliferation of Nuclear Weapons (NPT) is signed at Washington, Moscow and London.
  • July 9, 1955 - The Russell-Einstein Manifesto is issued, which addresses the dangers of thermonuclear weapons.
  • July 16, 1945 - The Trinity test, a plutonium implosion device, takes place at 5:29:45 a.m. mountain war time at Alamogordo, New Mexico. It is the world’s first atomic detonation.
  • July 21, 1945 - President Truman approves the order for atomic bombs to be used against Japan.
  • July 29, 2014 - The United States renews its 1958 Mutual Defense Agreement to share nuclear weapons information with the United Kingdom.
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