For example, if a country has a simple nuclear power plant, such as the Bushehr nuclear power plant in Iran, even if the fuel required by the power plant is provided by a foreign country, the necessary plutonium to make a nuclear bomb can be extracted from the waste of the fuel.
Thus, a country can decide not to produce nuclear weapons despite having access to nuclear fuel technology, and this means using nuclear technology for peaceful purposes.
Of course, some of the countries used the technology of the nuclear fuel cycle for military purposes, while some others followed the peaceful path under a security umbrella or with the consensus of the East and West.
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