- Union Internationale des Avocats: President (1998-99); President d’Honneur (2000); NGO Delegate to the United Nations (1995-present)
- Judicial Conference of the United States Court of Appeals for the Second Circuit: Executive Secretary, Planning Committee (1992-99)
- International Bar Association: Committees on International Litigation and Arbitration
- The Association of the Bar of the City of New York: Council on International Affairs; International Commercial Dispute Resolution Committee; Task Force on International Legal Services (Former Chairman); Honors Committee
- Advisory Board, Adolescent Girls Legal Defense Fund, Equality Now