The Jewish Peace Lobby, based in Silver Spring, Md., is focused on influencing American foreign policy toward peace. Contact its president, Jerome Segal.

Rabbi Michael Lerner is editor of Tikkun magazine and founder of the Tikkun Community, a peace and social justice movement. He is also a co-founder The Network of Spiritual Progressives.

Rabbi Joseph Ehrenkranz is rabbi emeritus of Congregation Agudath Sholom in Stamford, Conn., and a co-founder of the Center for Christian-Jewish Understanding at Sacred Heart University in Fairfield, Conn. The center is a leading forum for dialogue and learning.

Americans for Peace Now, founded in 1981, calls itself the leading U.S. advocate for peace in the Middle East. It works to educate Americans and engage the U.S. political process as well as to support Peace Now, the leading Israeli peace organization.

John C. Green is a senior fellow at the Pew Research Center’s Forum on Religion & Public Life, specializing in religion and American politics. He also serves as interim university president, director of the Ray C. Bliss Institute of Applied Politics and distinguished professor of political science at the University of Akron.

Ethan Felson is vice president and general counsel of the Jewish Council for Public Affairs.

Anna Greenberg is a senior vice president and leading pollster for the Democratic polling firm Greenberg Quinlan Rosner Research, based in Washington, D.C.

Steve Masters is president of Brit Tzedek v’Shalom Jewish Alliance for Justice and Peace, an American Jewish organization that, among other things, has pushed the White House, through an Internet petition drive, to get the Palestinians and Israel to negotiate. He was present for the signing of the Geneva Accord and has lived in Israel.

Read a Jan. 28, 2005, Catholic News Service story about a threat by a Jewish group, the Coalition for Jewish Concerns, to sue the Vatican for access to its World War II-era archives.