In 1950, US president Harry S. Truman publicly stated that the use of nuclear weapons was under "active consideration" against Chinese targets during the Korean War.
[1][2][3][4] In 1953, US president Dwight D. Eisenhower threatened the use of nuclear weapons to end the Korean War if the Chinese refused to negotiate.
[13] In 1969 and onwards, US president Richard Nixon indirectly threatened North Vietnam with nuclear weapons via his madman theory.
Putin went on to threaten nuclear powers that if they supported another country's attack on Russia, then they would be considered participants in such an aggression.
[22][23] On September 27, 2024, Belarusian President Alexander Lukashenko warned that Belarus will use nuclear weapons if attacked by the West.