Last week, the U.S. Treasury said it would lift sanctions on the core empire of Russian businessman Oleg Deripaska, including Rusal and its parent En+, as they have agreed to restructure to reduce Deripaska's stakes.

The deal is subject to a 30-day review, during which the U.S. Congress may pass a joint resolution of approval or disapproval.

(Reporting by Darya Korsunskaya; Writing by Katya Golubkova; Editing by Christian Schmollinger)