Ravenal has been a disengager in season and out for two decades, and this might be his season. In eccentric but provocative prose, he foresees no threats to America's essential security, and he sees President Bush's "new world order" as foredoomed in a world of "regionalized" power and "general unalignment." He would phase out U.S. commitments to NATO, Japan and Korea, and cut military spending to match.