Read our Privacy noticeA Russian man has been found guilty of assaulting a woman after Donald Trump’s youngest son told UK police he witnessed the attack during a video call. Barron Trump, 19, saw his friend being attacked by Matvei Rumiantsev in London on 18 January last year, a trial at Snaresbrook Crown Court was told. Prosecutors said that Rumiantsev was “jealous” of her friendship with Mr Trump. Prosecutor Serena Gates said that Rumiantsev was jealous of the woman’s friendship with Mr Trump, perhaps because of his “public profile”. He became aware of the woman’s friendship with Mr Trump in October 2024, jurors were told.