Geneva

Estonia was a member of the League of Nations from 22 September 1921, and became a member of the United Nations on 17 September 1991. Estonia’s first Permanent Representative to the UN headquarters was Ernst Jaakson, Estonia’s long time Consul General in New York and Head of Mission in the United States, a diplomat who with his service helped to maintain the legal continuity of the Republic of Estonia through the Soviet occupation.

You can find more detailed information about the activities of Estonia in UN on the website of Ministry of Foreign Affairs of Estonia.