About Ryszard Kukliński
Ryszard Jerzy Kukliński (June 13, 1930 – February 11, 2004) was a Polish Army colonel and Cold War spy for NATO (CIA codename Jack Strong). He was posthumously promoted to brigadier general by Polish President Andrzej Duda. Between 1972 and 1981 Kukliński passed top-secret Soviet documents to the CIA, including Soviet plans for the invasion of Western Europe. Former United States National Security Advisor Zbigniew Brzeziński described him as "the first Polish officer in NATO." During his term as Poland's first freely elected president, a Solidarity leader, Lech Wałęsa, refused to pardon Kukliński. He was the first foreign recipient of the Distinguished Intelligence Medal.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.