2005 – present
• Founding Member of the Steering Committee of the Israeli-Palestinian Peace NGO Forum, a network of more than 100 Israeli and Palestinian peace and dialogue NGO’s.

2005 – present
• Member of the Executive Committee of ALLMEP – the Alliance for Middle East Peace, a coalition of some 30 peace and dialogue organizations based in the US and in Israel/Palestine aimed at lobbying the US Government to increase its funding for Middle East Peace Work

2004 – present
• Chairman of the Board of Directors, MAKOMOT – The Israeli Center for Environmental Mediation

2002 – present
• Member, Editorial Review Board, Human Rights & Human Welfare

1997 – Present
• Member, Editorial Board, Palestine-Israel Journal of Politics, Economics, and Culture

1995 – Present
• Member, Council for Peace and Security

1994 – 2000
• Member, Board of Trustees, International Center for Peace in the Middle East

1994 – 1996
• Atid – the Movement for Advancing the Peace Process

1992 – 1996
• Meretz Central Council

1985 – 1988
• Founding Chairman, Kehilat Kol Haneshama, Jerusalem, an alternative Synagogue affiliated with the Israeli Movement for Progressive Judaism

1984 – 1992
• Founding Board Member, Lapid, the Movement for Teaching the Lessons of the Holocaust

1993 – Present
• Founder and Member of Presidency, Adam Institute, Jerusalem

1982
• Member, State Educational Community of Democracy and Coexistence Education, Ministry of Education
This committee formed by the Minister of Education met during the course of 1982 and submitted recommendations to the Ministry for the creation of a unit within the Ministry for the advancement of democracy and coexistence education.

1982 – 1993
• Member of Board of Trustees, Interns For Peace