Which countries were known to give under nuclear weapons capability in 1985?

In 1985, the countries known to possess nuclear weapons capabilities included the United States, the Soviet Union, the United Kingdom, France, and China. Additionally, India had conducted its first nuclear test in 1974, although it was not recognized as a nuclear weapons state under the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). South Africa had developed nuclear weapons but dismantled its program in the early 1990s. Other nations, such as Israel, were widely believed to have nuclear weapons, although they maintained a policy of ambiguity.