Ryszard Kukliński

Ryszard Jerzy Kukliński (June 13, 1930 – February 11, 2004) was a Polish colonel and Cold War spy for NATO. He passed top secret Warsaw Pact documents to the CIA between 1972 and 1981. The former United States National Security Advisor Zbigniew Brzeziński described him as "the first Polish officer in NATO.