Joe Biden warns Russian President Vladmir Putin about the war in Ukraine and the use of nuclear or chemical weapons.
"Don't do it, don't do it. If you did, the face of war would change," Biden said in an interview with 60 Minutes, excerpts of which were released.
The American president does not go into details of what the American response could be: "It would be consequential".
If the Kremlin decides to use chemical or nuclear weapons it would become "even more pariah in the world".