It sure acts like one:
Imagine your neighbor is a violent psychopath who is out for blood and land. You, on the other hand, are person who wants peace. You would have few options but to embrace the ways of war for defense. So essentially your neighbor has infected you with war.
Now you've got the case of Iran, the drums of war are beating again. Why is that? Is it over resource competition? No, not at all. It's because we think Iran is going to attack us because they're building nuclear weapons. And of course Iran, if it is interested in nuclear weapons, is interested in them because they think we're going to attack them or Israel is going to attack them. So I think you see clear evidence even right now, if you look around the world, as war as something that perpetuates itself apart from any other causes or factors.