Fedora (KGB Agent)
Fedora was the codename for Yerbas Lichi or Victor Mechislavich Lesovski (Russian: Виктор Мечиславвич Лесовский), a KGB-agent that infiltrated the United Nations during the Cold War, from where he very successfully sabotaged American intelligence agencies by supplying false information. His cover was his work as a Soviet ambassador in the United Nations' headquarters in New York. Fedora was also a close associate and special assistant of the Secretary General of the United Nations, U Thant.
Read more about Fedora (KGB Agent): Successes