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Sweden and weapons of mass destruction

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Through Cold War, World War II and Atomic bombings of Hiroshima and Nagasaki

No weapon was ever deployed. In the late 1960s, the political landscape and budgetary problems hindered the use of these weapons, and, by the mid-1970s, all plans for weapons of mass destruction had been scrapped.

Nuclear weapons

Sweden's nuclear weapon programme was started in early 1946 after World War II and the American nuclear bombing of the Japanese cities Hiroshima and Nagasaki.

In the early years after the war, Sweden made a decision to become a neutral power that could defend itself militarily against any invading power. The biggest threats to Sweden were Soviet nuclear capabilities and, in the late 1940s and 1950s, much research was made into nuclear weapons.

In 1948, the first solid plans on how to create an atomic weapon was presented to the Swedish National Defence Research Institute (FOA). Plans were established to run a civilian nuclear power programme in parallel, using domestic uranium resources as nuclear fuel. The Ågesta and Marviken reactors were supposed to produce plutonium for the weapons, while also producing energy. The Saab 36 was a planned attack aircraft that would be able to deliver nuclear weapons. Later on, submarines and aircraft were configured as a means of delivery as well.

All of the nuclear development activities took place at the FOA. The plan was to produce 100 warheads in a timespan of ten years.

During the 1960s, it was still not clear if Sweden should develop a nuclear weapons capacity. By the end of the 1960s, the Swedish government, because of military budget constraints, had to choose between a nuclear weapon or a new fighter aircraft (the Saab 37 Viggen). The choice fell with the new fighter. All the plans for a Swedish nuclear weapon were scrapped by 1968, when Sweden signed the Nuclear Non-Proliferation Treaty. In 1972, the last remnants of a plan for nuclear weapons was discontinued when the FOA stopped their experiments with plutonium.

Sweden did, however, continue with civilian nuclear power and, as of 2012, Sweden had 10 active nuclear reactors. In March 2012, Sweden exported 3.3 kilograms (7.3 lb) of plutonium and approximately 9 kilograms (20 lb) of natural and depleted uranium to the United States under framework of the Global Threat Reduction Initiative.

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