Well my friend it's very hard to say where we are in fact the most vulnerable for an terrorist attack. But think, we know that there are indeed many more terrorists and many other organizations operating within the middle east. Chances are that the terrain within the middle east area's are most vulnerable for a terrorist attack to take place. You see what is happening today over in Iraq, we have liberated this country and have many of our military base there..Well, it may not seem like a big loss, but the tactics of e.g. Truck Bombs,suicide Bombs, Drive- By attacks, etc, have been occurring much more often, in fact daily...So the prime grounds where we are most at risk would be The middle east. I'm sure many of you must agree with me on this matter, Hopefully it can be resovled and the world can become a better place and free from terrorism.