Vladimir Putin says Joe Biden was rude to call him a ‘crazy SOB’

Joe Biden (right) went off script at an election fundraiser to condemn Russia’s president, Vladimir Putin (left), and Donald Trump. Photograph: Patrick Semansky/AP

Vladimir Putin has described as “rude” Joe Biden’s comments in which the American president called the Russian leader a “crazy SOB”.

Biden was talking about the climate crisis on Wednesday when he said: “We have a crazy SOB like Putin and others, and we always have to worry about nuclear conflict, but the existential threat to humanity is climate.”