Is Holy War an Oxymoron??

An oxymoron is two words that don’t belong being used together. Why is the phrase “Holy War” an oxymoron? Why is it that so many conflicts in the world today are based upon religious differences yet all major world religions condemn killing?

I think that "Holy War" is an oxymoron the two words, holy and war, just don't go together. I say that war can never be holy it doesn't help anyone in any way shape or form, just destructs our economy and wonderful land. People think that war is the solution to all off of our conflicts with others. Some war world peace, but that can never happen with all this fighting going on. War also ends friendships between countries that may have been on good terms. So many conflicts are about conflicts, because many believe that their religion is the best and feel that it should be spread all over the world.