Moody's places RBS credit ratings on review for downgrade

``Ratings agency Moody's has placed Royal Bank of Scotland's credit ratings on review for downgrade, citing concerns over the part-nationalised lender's capital strength... The move is a blow to new RBS Chief Executive Ross McEwan who is looking to turn around the fortunes of the bank, which was the subject of a 45 billion pound ($74 billion) government rescue in 2008. He wants to speed up the wind-down of the bank's riskiest assets and sell off its U.S. business Citizens.''