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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.
- Few Countries Possess Nuclear Weapons, But Some Have Large Arsenals
- A LOF of Countries Have Given Up Obtaining Nuclear Weapons
- The Destructiveness of Nuclear Arsenals Has Declined
- Nuclear Weapons Tests Have Almost Stopped
- Nuclear Weapons Have Come Close to Being Used A Dozen Times Since World War II
- Many Countries Want to Limit Or Abolish Nuclear Weapons
Nine countries currently have nuclear weapons: Russia, the United States, China, France, the United Kingdom, Pakistan, India, Israel, and North Korea. These nuclear powers differ a lot in how many nuclear warheads they have. The chart shows that while most have dozens or a few hundred warheads, Russia and the United States have thousands of them. T...
The number of countries that possess nuclear weapons has never been higher. Only one country — South Africa — entirely dismantled its arsenal. But, as the chart shows, many more states considered or pursued nuclear weapons, and almost all of them stopped. In the late 1970s, more than a dozen countries considered or worked to acquire them. Recently,...
A simple count of the number of warheads, as shown in the previous chart, does not consider that these weapons differ in their explosive power. It also does not consider that not all of them can be used at once. The data shown in the following chart attempts to take this into account. It considers the destructiveness and deployment of nuclear warhe...
The nuclear weapons states frequently tested their warheads in the past, but tests now have almost ended. The chart shows that they peaked in 1962 at 178 tests, mostly conducted by the United States and the Soviet Union. These tests harmedthe environment and people, especially indigenous communities. Tests decreased later during the Cold War and ha...
After killing between 110,000 and 210,000 peoplein Hiroshima and Nagasaki in 1945, nuclear weapons have come close to being used more than a dozen times again.1 The chart below shows a timeline of such close calls.2We can see that some of them have been accidental, while others have been deliberate. You can learn more in our articleon the risks of ...
Countries have sought to reduce the threat posed by nuclear weapons through international cooperation. Most countries have approved the Partial and Comprehensive Nuclear-Test-Ban Treaties, which seek an end to nuclear weapons tests. The same goes for the Nuclear Non-Proliferation Treaty, whose objective is to prevent the spread of nuclear weapons. ...
Aug 6, 2020 · Seventy-five years after the atomic flash set fire to Hiroshima, thousands of nuclear weapons sit in arsenals around the world, ready to deploy by aircraft or missile.
The United States conducted its first nuclear test explosion in July 1945 and dropped two atomic bombs on the cities of Hiroshima and Nagasaki, Japan, in August 1945. Just four years later, the Soviet Union conducted its first nuclear test explosion. The United Kingdom (1952), France (1960), and China (1964) followed.
Mar 22, 2022 · Nuclear weapons analysts estimate that the world’s nine nuclear states—China, France, India, Israel, North Korea, Pakistan, Russia, the United Kingdom and the United States—have around ...
Aug 4, 2015 · Seven-in-ten Americans ages 65 and older say the use of atomic weapons was justified, but only 47% of 18- to 29-year-olds agree. There is a similar partisan divide: 74% of Republicans but only 52% of Democrats see the use of nuclear weapons at the end of World War II as warranted.
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This dataset describes times-series-cross-sectional information on all nuclear-armed states' strategic nuclear forces, and provides three indicators: the deliverable strategic warhead count, the equivalent megatonnage (EMT) index, and the counter military potential (CMP) index.
