As someone who teaches and writes about international politics, I can confidently say that last week was one of the strangest in memory, from the G-20 circus in my backyard (Pittsburgh) to the political zoo at the United Nations. President Obama, of course, was front and center, including with a major speech at the United Nations. What struck me wasn't so much what Obama said as what others said about him. I cannot recall any time, in the entire history of the United Nations, where nearly every single one of the world's worst rogue dictators came out of the woodwork...