The World Alliance of Reformed Churches (WARC) links more than 75 million Christians in about 100 countries around the world. It is a fellowship of more than 200 churches with roots in the 16th-century Reformation led by John Calvin, John Knox, Ulrich Zwingli and many others, and the earlier reforming movements of Jan Hus and Peter Valdes. Our churches are Congregational, Presbyterian, Reformed and United. Most live and witness in the southern hemisphere; many are religious minorities in their countries. The Alliance is an interdependent network of people and churches working and worshipping together with faith in God's promise always to be with his creation.