One of my favorite professors from college just wrote a marvelous analysis of the war in Afghanistan, socially speaking. I was especially impressed with his insight regarding Americans and our tendency to consider "war in peacetime" to be "interfering" and unnecessary. But we only consider it peacetime because we are not the ones being attacked, tortured, and enslaved--and even when we are, such as with Pearl Harbor or 9/11, we have to be dragged kicking and screaming into war (as noted by Aikman). Even with Hitler helpfully declaring war on America, it took forever for us to go out and help save the world.
Just a question: when is it our responsibility to the world to use our power (for we ARE a mighty nation, even now) to prevent atrocities abroad?