jan 1, 1993 - 1993
January 3 - Bush and President Yeltsin sign the Strategic Arms Reduction Treaty (START II), which reduces their nations' arsenals of long-range nuclear weapons to 3,000-3,500 and eliminates all MIRVed land-based missiles over the next ten years.
March - Prime Minister F.W. de Klerk announces that South Africa had successfully developed nuclear weapons, and then voluntarily destroyed them before signing the NPT in 1991.
Added to timeline:
atomic and nuclear physics