Here is a paragraph from Donald Miller's book Searching For God Knows What about war.
In a way, the war in heaven, the war between God and those against God, is the war to explain all wars. If you really want to believe one side is good and another side is bad, if you really want to look back through history and find a perfect and innocent kingdom that was attacked by an enemy, you have to go back to the Garden of Eden. A perfect and innocent kingdom hasn't been attacked since then. Details are few because Moses hardly gets into it, but to be sure, the Bible paints a picture of a certain evil tricking innocent humans into betraying the God who loved them, the King who was their friend. They were enticed, they considered their options, and they wanted to be equal to God. It's ugly stuff.
I think Donald hits the nail on the head by suggesting that the war that began thousands of years ago between God and Satan, with us humans in the middle as the thing being fought for, is the same war that goes on today. Our war with our neighbor, our war with Iraq, our war with our selves, all stem from this initial act of war. I also like the point he makes about innocence. Let's take innocence out of the picture when it comes to war. No country (or person) goes to war with purely innocent motives.
War is a tricky topic, and I must confess that as I get older, I become closer and closer to becoming a pacifist. I'm not there yet, mind you, but I keep slipping closer every year. I realize that this is a painfully unpopular view to hold in America, but it is how I feel. I am still sorting out my feelings on this. I will keep you posted as to my further breakthroughs. Anybody out there with me on this?