Over a lunch in Washington, the Australian ambassador, Kim Beazley, remarked that, following World War II, our nation’s willingness to commit a hundred million dead Americans in a thermonuclear war to defend Europe was the single most self-sacrificial pledge in history. For me, that cut right through the criticisms of NATO that I continually heard in Washington, D.C. Whether we liked it or not, we were part of the world and needed allies, for our benefit as much as theirs.