I think she is right. I also think that she is arguing that the natural state of mankind is conflict, and that it requires a constant effort to keep the peace. I suspect this is not how most Americans want to look at it.
And here is Con Crane’s collection of the hard military lessons of the last 13 years. Unfortunately, I think every one of them is correct. I agree with him even more than I agree with myself.
Thomas E. Ricks covered the U.S. military from 1991 to 2008 for the Wall Street Journal and then the Washington Post. He can be reached at firstname.lastname@example.org.