Russian stocks seen sliding after S&P downgrade to 'junk'
January 27, 2015 at 01:46 AM EST
MOSCOW, Jan 27 (Reuters) - Russian stocks are expected to open sharply weaker on Tuesday, after ratings agency S&P downgraded Russia's sovereign credit rating to 'junk' late on Monday, but the rouble could strengthen since it already took a heavy hit in the previous session.