Mrs Justice Gloster published her ruling after Russian oligarch Boris Berezovsky's claims against Mr Abramovich were dismissed last month.

BBC: Roman Abramovich 'could not pull strings' with Putin

Abramovich claimed during the trial that Boris had links to Chechen terrorists, while an ex-Chechen separatist claimed that Boris financed separatists in the 1990s.

FORBES: Did Boris Berezovsky Kill Himself? More Compelling, Did He Kill Forbes Editor Paul Klebnikov

In August 2012 Roman Abramovich won a suit in the High Court in London brought by billionaire Boris Berezovsky. his former partner.

FORBES: Roman Abramovich