FBI arrests 10 accused of working as Russian spies - latimes

An FBI investigation turns up a vast spy operation on the East Coast with 'deep cover' assignments, including transmitting U.S. nuclear weapons research to Moscow, authorities say. - FBI arrests 10 accused of working as Russian spies

Washington prepares for Russian president's visit
FBI allegations against 'Russian spies' in US BBC News
Wall Street Journal - Aljazeera.net - Washington Post - BusinessWeek