Michael Cherney (Mikhail Chernoy), an Israel-based international industrialist, may soon file a lawsuit against Oleg Deripaska, the owner of RusAl, the largest Russian and second-largest world aluminum producer. Cherney claims that Deripaska has deliberately concealed from Western banks the fact that Cherney owes 20% of Rusal and has failed to honor a contract with Cherney, which obliges Deripaska to pay the cost of these shares, currently estimated at $3 billion ...