Last December, when President Obama launched his second escalation of the Afghan war, he did so with the unflinching support of the Republicans, the right, and neoconservativies. But a small group of conservatives, libertarians and assorted contrarians on the right has opposed the war, and yesterday I journeyed to the Cato Institute to find out whether that nucleus of anti-war opposition is significant or not. The answer: maybe, but probably not. The Cato conference was entitled "Escalate or Withdraw? Conservatives and the War in Afghanistan," and it brought together several ultra conservative members of Congress: Tom McClintock (R-CA); Dana Rohrabacher...