There is no war between Christianity and Islam. Some extremists in both groups are using religion for very ungoldy purposes.
Both Islam and Christianity originated out of Judaism.
christianity islam
The connection between Islam, Christianity and Judaism is that the three religions trace their history to the covenant between God and Abraham.
Christianity is older than Islam.
The question should be " What does Christianity have to do with Jews (or Judaism)?" Judaism is like a tree where Christianity is its branch and Islam is it leaves. Christianity is based on Judaism and Islam is based on Christianity. The major difference between the three is that Judaism doesn't have jesus in it unlike Christianity and Islam.
Christianity: Son of God (Messiah) Islam: Prophet Judaism: False messiah
Islam, Judaism and Christianity.
There are a few very obvious differences between Christianity and Islam. They follow different holy books and also have different names for their God.
Christianity and Islam have similar religious roots in the Middle East although what was believed about individual characters represented may diverge very greatly. For example, in Christianity Jesus is the savior, but in Islam he is a prophet.
Christianity, Islam
Islam, Christianity
Christianity, Roman Catholic and Orthodox, and Islam