A Russian man has been jailed for four years for assaulting a woman in an attack which was witnessed on a video call by Donald Trump's youngest son Barron.Matvei Rumiantsev, 23, drunkenly beat up the victim when he became jealous of her blossoming friendship with Mr Trump, 19, after she met him through social media.

A Russian man has been jailed for four years for assaulting a woman in an attack which was witnessed on a video call by Donald Trump's youngest son Barron.Matvei Rumiantsev, 23, drunkenly beat up the victim when he became jealous of her blossoming friendship with Mr Trump, 19, after she met him through social media.