War has a problem with the human pshycy. When you fight an enemy long enough, no matter that you are moraly right, you and your enemy devolve into equaly brutal savages. Given enough time, the war and violence becomes it's own reason to keep fighting.
Only if you can perfom a one time super superior action which completley defeats your foe do you escape becomeing indistigueshable from your foe. But then you become a superior killer of mankind raising the bar as the price of playing war for future enemies. Dropping nukes on Japan, then the cold war is a living example.
Now the War on terror. Terrorists......terrorism.... Israel has morally devolved to walking a very gray line in the name of survival due to the length of their war with Islam. To many in the world they have already become indistigueshable from thier enemies. And now the West may have to walk the same path downwards in the name of survival.
Being the very clever and innovative western culture we are, we will invent very superior killing machines that will eventually detect and destroy all of the terrorists everywhere on this planet with the push of a button. We will become more terrifiying than the terrorists because the machines will effectivly be invisible, silent, 100% accurate, and have no soul or compassion.
And in the end those machines and thier technology will be in the hands of the elite few all over the planet. We as a species will still be nasty little children addicted to our baser nature. These machines that will save us from the terroists will help us take another thousand steps backwards from growing up as a species.