Roman Abramovich has been added to the UK government's sanctions, with all of the 55-year-old's assets - including Chelsea Football Club - frozen with immediate effect.
The club will be allowed to continue functioning with restrictions under a special sporting licence that expires at the end of May but its sale has been blocked, for now at least, and the owner will no longer be permitted to invest.
Among many consequences for the club under the "Russia Regulations" licence, any prize money earned will be frozen and supporters will not be allowed to attend away games.