The Episcopal Peace Fellowship began in the early days of World War II and continues to speak out against war in the Episcopal community.

The Pentecostals & Charismatics for Peace & Justice, formerly the Pentecostal Charismatic Peace Fellowship, opposes war in the Pentecostal and Charismatic Christian communities. Contact administrator Natasha Rubin.

The Baptist Peace Fellowship of North America is the largest network of Baptist peacemakers in the world. Contact information manager Allison Paksoy.

The Presbyterian Peace Fellowship started in the 1940s as a group that provided support to conscientious objectors to World War II and continue to speak out against war. Rick Ufford-Chase is the executive director.

Read a Jan. 28, 2011, background article on the Muslim Brotherhood by CNN.com.

JustWarTheory.com is an extensive guide to philosophical studies of warfare, maintained by Mark Rigstad, associate professor of philosophy at Oakland University. It is a treasure trove of links, information and articles on just war theory.

The BBC maintains an ethics guide on war as part of their section on religion and ethics.

Col. Arthur J. Athens is the director of the U.S. Naval Academy’s Vice Admiral James B. Stockdale Center for Ethical Leadership. He has a diverse background spanning the military, higher education, and the non-profit sector.

United for Peace & Justice is a coalition of more than 70 groups, including several religious groups, committed to opposing war.