A multi-billion-dollar British court fight involving Chelsea football club owner Roman Abramovich, and his former business partner Boris Berezovsky is underway.<br /><br />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.<br /><br />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.<br /><br />Al Jazeera's Nadim Baba reports from London.
