The Organization of Islamic Cooperation, based in the Kingdom of Saudi Arabia, is a group of 57 nations that considers itself the collective voice of the Muslim World. It serves to both protect Muslim interests, as well as promote harmony and peace. Contact via their website contact form.
Craig Keener is a professor of New Testament at Asbury Theological Seminary in Wilmore, Kentucky. He co-authored an article on the Nation of Islam for A Guide to New Religious Movements. He is an ordained minister in the African Methodist Episcopal Church.