The moment the two Soviet officials arrived at their offices at the United Nations Secretariat building in New York City, they knew something was very, very wrong. The inner office was closed off. The lock on the door had been changed, and a printed notice said that the office had been sealed by U.N. security forces. The date was Friday, April 6, 1978.
The distraught Soviets summoned building guards and demanded an explanation. What had happened to their countryman and boss, Arkady Shevchenko? He was a ranking Soviet diplomat, a former top adviser to Foreign Minister Andrei Gromyko and, for the...