IS-Spencer OliverSpencer Oliver served as the first Secretary General of the OSCE Parliamentary Assembly, from October 1992 to December 2015.  

Previously, Oliver served 22 years as a staff member in the U.S. Congress, including as Chief of Staff of the U.S. Helsinki Commission from 1976-1985 and as Chief Counsel of the Foreign Affairs Committee of the U.S. House of Representatives. He also served in several senior diplomatic positions on U.S. delegations to CSCE Review and Expert Meetings between 1977 and 1993.