Is Religion the cause of war?

Does religion cause war? We've heard this charge from the atheists so many times, it's become a lie wanting to be true. But a massive study on the art of war from 2004 reveals that out of 1,763 wars, only 123 were caused by religion. Take Islam out of the picture, removing Jihad, and you're down to 57 wars (including the Crusades, the 30 years war, and all the wars of the reformation) caused by non-Islamic religion. In other words, like so much else- Atheism is objectively false.