Thomas Guerber

Ambassador Thomas Guerber was appointed Head of the UN Division of the Federal Department of Foreign Affairs (FDFA) in March 2022 and took up this role in August 2022. In January 2023 he was appointed to Deputy State Secretary.

Previously, he was the Director of DCAF - Geneva Centre for Security Sector Governance, from 1 July 2016 to July 2022. From 2010 to 2013, Ambassador Guerber was Switzerland’s Deputy Permanent Representative to the United Nations in New York. From 2007 to 2010, he worked as a Counsellor for financial, budgetary, and institutional issues at Switzerland’s Permanent Mission in New York. He was also posted in London and Copenhagen and held various other functions within the FDFA’s Middle East and North Africa Division and Human Security Division, including Head of Section for Peace Policy and Human Security. He entered the Swiss diplomatic service in 1997.

Thomas Guerber holds an LL.M. degree in public international law and international economic law from the University of Berne, a master’s degree in European integration and economics from Institute for European Global Studies (Basel) and a master’s degree in history and literature from the University of Basel.

Thomas Guerber was born in Bangkok in 1967. He is married and has two sons. Apart from his mother tongue German, he is fluent in English and French.