The Russian invasion of Ukraine has raised the fear of nuclear weapons to a level not seen since the Cold War. 

Russia’s nuclear arsenal is believed to be the world’s largest, leaving President Vladimir Putin with some 5,977 nuclear warheads at his disposal, according to the Federation of American Scientists, compared with the US’s 5,428. 

And Putin has signalled he is prepared “to resort to the most extreme level of brinkmanship” in an attempt to win victory in Ukraine, said The Guardian. He ordered his military to put Russia’s nuclear deterrence forces on high alert in February, soon after the war began.

It has left many wondering what could be done if a foreign military did launch an intercontinental ballistic missile (ICBM), and if such a weapon can be stopped once it has been fired.

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