Last week, at University of Bristol, I gave a talk called "The Future of World Order" to the student International Affairs Society. It was a speculative lecture, based on my 17 years directing the Grawemeyer Award (for Ideas Improving World Order) more than my scholarship per se. I warned the audience from the start of two personal biases: (1) I am an optimist; and (2) I don't really put much stock in specific predictions. I tried to stick to...