The Iran War: Can Humanity "Break Free from its own Destructive Tendencies?"

I have mixed feeling about the war in Iran. On the one hand, it is terrifying to think of Iran having nuclear weapons with a naval fleet or submarines capable of delivering annihilation to any city in the United States. Europe is under particular threat which may explain the reluctance of Spain and the U.K. to get involved. Is their anti-U.S. talk designed to protect them from retaliation considering their proximity to the conflict? Somehow I doubt that carries much weight with fanatical terrorists!