Obama accepted his Nobel Peace Prize, and did it with a rather unusual defense of just war. Following is an excerpt:

We must begin by acknowledging the hard truth that we will not eradicate violent conflict in our lifetimes. There will be times when nations – acting individually or in concert – will find the use of force not only necessary but morally justified.

I make this statement mindful of what Martin Luther King said in this same ceremony years ago – “Violence never brings permanent peace. It solves no social problem: it merely creates new and more complicated ones.” As someone who stands here as a direct consequence of Dr. King’s life’s work, I am living testimony to the moral force of non-violence. I know there is nothing weak –nothing passive – nothing naïve – in the creed and lives of Gandhi and King.

But as a head of state sworn to protect and defend my nation, I cannot be guided by their examples alone. I face the world as it is, and cannot stand idle in the face of threats to the American people. For make no mistake: evil does exist in the world. A non-violent movement could not have halted Hitler’s armies. Negotiations cannot convince al Qaeda’s leaders to lay down their arms. To say that force is sometimes necessary is not a call to cynicism – it is a recognition of history; the imperfections of man and the limits of reason.

The rest of the speech is online here (and a billion other places). I thought it was a very astute distinction between the role of social critic (MLK, Ghandi, Bobby) and the moral obligations of a head of state.

Thoughts?