Chelsea manager Thomas Tuchel lost his temper at a news conference ahead of their FA Cup match at Luton Town and snapped at journalists after being repeatedly asked about Russia's invasion of Ukraine. The world of sports continued to isolate Russia on Tuesday after it launched its invasion of Ukraine by land, air and sea last week following a declaration of war by President Vladimir Putin. Chelsea are owned by billionaire businessman Roman Abramovich, who on Monday was asked by Ukraine to help mediate because of his background in Russia, where he made a fortune in the chaotic 1990s period of post-communist privatisation.