Christianity 30 Islam -- 25 Islam 24 Relations -- 21 Christianity and other religions -- 16 History -- 11 Religious aspects -- 11 more ... Christianity -- 9 Foreign relations -- 9 Religious aspects 9 Church history 7 Christianity and politics -- 6 Politics and government -- 6 Church history -- 5 Politics and government 5 War -- 5 Christianity and international affairs 4 History and criticism 4 Human rights 4 Jihad 4 Violence -- 4 Christianity and politics 3 Fiction 3 German language 3 German language -- 3 History 3 Islamic fundamentalism 3 Missions -- 3 Muslim converts from Christianity -- 3 Religion and international affairs 3 less ...