Rudy Giuliani is suing Joe Biden, saying the president tarnished his 'unimpeachable character' by calling him a Russian pawn 4 years ago

The lawsuit cites comments Biden made during a 2020 presidential debate, where he called Giuliani a "Russian pawn."

https://www.businessinsider.com/rudy-giuliani-suing-joe-biden-for-defaming-him-years-ago-2023-10