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It tested the first nuclear weapon on 16 July 1945 ("Trinity") at 5:30 am, and remains the only country to have used nuclear weapons in war, devastating the Japanese cities of Hiroshima and Nagasaki. The project expenditure through 1 October 1945 was reportedly $1.845–$2 billion, in nominal terms, [56] [57] roughly 0.8 percent of the US GDP ...
- Nuclear Triad
A nuclear triad is a three-pronged military force structure...
- Nuclear Weapons of The United States
The United States was the first country to manufacture...
- Montebello Islands
The islands were the site of three British atmospheric...
- Supreme Military Commander
Departments: General Office Director: Zhong Shaojun Joint...
- Comprehensive Nuclear-Test-Ban Treaty
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a...
- China and Weapons of Mass Destruction
The People's Republic of China has developed and possesses...
- Nuclear Triad
- Nuclear Weapon Stockpiles Today
- Nuclear Bombs Dropped During World War II
- Nuclear Escalation During The Cold War
- Treaties That Limit Nuclear Weapons
It is estimated that there are approximately 13,080 nuclear warheads in the world today. While this is far fewer than either the U.S. or Russia possessed during their Cold War peak, it is notable that there are more countries with nuclear weapons than there were 30-40 years ago. At present, Russia maintains the highest number of nuclear weapons, wi...
To date, nuclear weapons have been used in war only twice. At the end of World War II, the United States dropped a nuclear bomb called Little Boy on Hiroshima, Japan, on August 6, 1945, and a second bomb called Fat Man on Nagasaki, Japan, on August 9, 1945. Little Boy detonated with an explosive force of approximately 15 kilotons, which leveled mos...
The bombings of Hiroshima and Nagasaki established nuclear weapons as the ultimate weapons of war, which kicked off an arms race between the United States and the Soviet Union. A major component of the "Cold War," in which the U.S. and U.S.S.R. openly competed without actually declaring war on one another, the stockpiling of nuclear weapons continu...
Because of the broad lethality and destructive potential of nuclear weapons, governments have negotiated arms control agreements such as the 1970 Nuclear Non-Proliferation Treaty (NPT), the 1972 Strategic Arms Limitation Treaty (SALT), and the 1991 Strategic Arms Reduction Treaty (START). The NPT’s purpose is to inhibit the spread of nuclear weapon...
Learn about the number, type, and destructiveness of nuclear weapons by country, and how they have changed over time. See data, charts, and essays on the risks, history, and treaties of nuclear weapons.
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Learn which nine countries have nuclear weapons and how many they possess as of 2024. Find out the history, types, and effects of nuclear weapons and the treaties that regulate them.
With talk around Iran's nuclear capabilities, these are the rules about having nuclear weapons.
Learn about the nine countries that possess nuclear weapons and their arsenals, policies, and threats. Explore interactive tools, features, and explainers on the global nuclear situation.
Jan 11, 2024 · A data visualization that shows how countries have changed their stance on nuclear weapons over time. Based on data from Bleek (2017) and Nuclear Threat Initiative (2024), it classifies countries as not considering, considering, pursuing, or possessing nuclear weapons.
