Is the war against Iraq going to lead to WWIII

Could this be the match that lights the fire for a world war. Other countires are getting defensive and are worried about America being a super power with the years to come. If it is the beggining im sure it will be shorter than the last two, thats what worries me. The amount of power one person can have over a wide population is common and accepted today, yet when they have there finger on the button which can cause mass destruction the views of that person will change forever. I sure hope that this is not the beggining of the end, but a start of a new beggining