For nearly 20 years during the height of the Cold War, Boris Aleksandrovich Solomatin, oversaw most of the KGB's anti-American spy operations. The now-retired major general played a key role in the "handling" of John Walker Jr., the Navy officer who headed the most damaging spy ring ever to operate against the United States. Solomatin also recruited Glenn Michael Souther, a lesser-known Navy officer, who provided the KGB with some of America's nuclear war plans before eluding the FBI and fleeing to Moscow where he committed suicide in 1989. The Souther case is worth noting because he is considered to...