The world enters the Nuclear age when the U.S. drops two atomic bombs on Hiroshima and Nagasaki during WWII.
Four years later the USSR tests successfully its nuclear bomb and the nuclear age starts in earnest.
The world came close to nuclear war when the USSR wished to install intercontinental missiles in Cuba the range of which covered the entire U.S. President Khrushchev asked his fleet to return to Russia when American warships moved to intercept them and thus a nuclear holocaust was averted.
President George Bush of the U.S. and the Secretary General of the USSR Mikhail Gorbachev signed the historic nonproliferation treaty in 1991 which was the end of the Cold War between the two superpowers.
On Feb 21,2022 Russia recognises the two break away republics Donetsk and Luhansk in Ukraine's Dombas region. Three days later Russia invades Ukraine from the North, East and South.
On Feb 28, 2022 President Putin places Russia's nuclear forces on high alert following a comment by the UK Foreign Secretary Liz Truss.
I hope Ukraine and Russia reach an agreement in the United Nations session to be held soon allowing Ukraine to stay an independent country. Then the US and EU lift their sanctions against Russia and the world to avoids a nuclear catastrophe.