Article continues below advertisementBarron Trump alerted authorities in London after he witnessed a young woman being attacked via a video call. A news outlet reported on Wednesday, January 21, that the woman - whose name has not been released - was attacked in her flat by a "jealous" Russian national named Matvei Rumiantsev, who prosecutors say "flew into a rage when he tried to phone her earlier that evening."Article continues below advertisementBarron Trump Witnessed Attack on Video CallSource: MEGABarron Trump alerted authorities after witnessing an attack via video call.