Fritz Kraemer died recently. What has this got to do with U.S. President George W. Bush's visit to London? Let me explain.The monocle-wearing Professor Kraemer, a curious survivor of Wilhelmine Germany, and an accomplished scholar of international law, political philosophy and history, died of kidney failure at 95 in Washington on Sept. 8. It could be argued that his was the clearest mind behind the American prosecution of the Cold War against Soviet Communism. From a small office in the Pentagon, he taught a generation of U.S. officers not only the principles of geostrategic warfare, but the reasons why it...