Mathias Zeller holds a MA in International Affairs from New York’s Columbia University, where he specialized in international security policy and conflict resolution. He spent three months (July-September 2013) with the Mediation Support Unit of the United Nations Department of Political Affairs in New York. Before joining swisspeace, he interned with the Swiss Federal Department of Foreign Affairs (August 2011 - June 2012), supporting the mediation desk and the peace policy programs in Indonesia and Thailand. Mathias also interned with the United Nations Development Program in New York (May-December 2010), where he worked on Eastern Europe, focusing mainly on EU accession countries. He joined swisspeace in July 2012 as a program officer in the Mediation program.