Top Russian spy defects after betraying U.S. ring By Thomas Grove Thomas Grove 21 mins ago MOSCOW (Reuters) – The head of Russia's deep cover U.S. spying operations has betrayed the network and defected, a Russian paper said on Thursday, potentially giving the West one of its biggest intelligence coups since the end of the Cold War. The newspaper, Kommersant, named the man as Colonel Shcherbakov, and said he was responsible for unmasking a Russian spy ring in the United States in June whose arrests humiliated Moscow and clouded a "reset" in ties with Washington. The betrayal would make Shcherbakov...