Since 2002, Ambassador Wenaweser has been the Permanent Representative of Liechtenstein to the United Nations. In 2008, Ambassador Wenaweser was elected to a three-year term as the President of the Assembly of States Parties of the International Criminal Court.
From 2003 until his election as President, he chaired the Special Working Group on the Crime of Aggression for the Assembly of States Parties. At the United Nations, Ambassador Wenaweser served as Chairman of the Third Committee (dealing chiefly with human rights issues) during the 57th session of the General Assembly and as Vice Chair of the Open-Ended Working Group on Security Council Reform and Adviser on Security Council Reform during the 59th session.
Between 2003 and 2005 he served as Chairman of the ad hoc Committee on the Scope of Legal Protection under the 1994 Convention on the Safety of United Nations and Associated Personnel. Ambassador Wenaweser was educated at the University of Zurich, the Graduate Institute of International and Development Studies in Geneva, and the Bavarian Academy of Sciences and Humanities in Munich, Germany.