John Kerry's position on the Iraq war is like the weather in North Texas: If you don't like it, stick around, because it'll change before too long.On Monday, a reporter asked Mr. Kerry if he had known in 2002 that there were no weapons of mass destruction in Iraq, would he still have voted to give the president authority to wage the war. "Yes, I would have voted for the authority," the Democrat said. "I believe it was the right authority for a president to have." Now hold on. In his convention speech, Mr. Kerry said that protecting the country...