A multi-billion-dollar British court fight involving Chelsea football club owner Roman Abramovich, and his former business partner Boris Berezovsky is underway.
Berezovsky has accused Abramovich of exploiting his ties to the Kremlin as intimidation tactics for selling Russia's fourth-biggest oil firm at a knockdown price.
Abramovich, the world's 68th richest man, with an estimated fortune of $12bn, denies the charges and says he merely paid Berezovsky money for political cover and protection.
Al Jazeera's Nadim Baba reports from London.
