JOHN Kerry has joined John Murtha and other Democrats in saying he erred in voting for the liberation of Iraq. "It is essential to acknowledge that the war itself was a mistake. . . . It was wrong, and I was wrong to vote for that Iraqi war resolution," Kerry told a Democratic Party gathering in Washington this week. If the junior senator from Massachusetts truly believes that his judgment was so clouded that he sent thousands of American men and women to their deaths needlessly, then he should do the honorable thing and resign from Congress. Senators and congressmen...