How is Water going to cause WORLD WIDE WAR? www

I've been reading a lot about Sharia Law in America and court rulings in Oklahoma City, recently.

This Islamic Law and way of life is getting me scared.

HOWEVER, Fresh Water is rare on earth and the way Human are contaminating it more and more, I wonder if the REAL next world wide war is going to be over WATER?

Does anybody have any insight on the war of the waters?

I Know there is many political wars over the Colorado River and has been ongoing for many years.

WATER, our only resource that is a must to have and sustains our LIFE on EARTH.