Sen. Clinton said yesterday that Democrats emerged from the Senate debate on U.S. troop withdrawals from Iraq "more united" than ever behind a conditional-exit strategy in the war that has divided her party. In remarks before the NDN, a new centrist-leaning Democratic advocacy group, Mrs. Clinton avoided the criticism she had earlier leveled at anti-war lawmakers seeking a quick pullout of all U.S. forces within one year. This time she offered only words of praise for the widely differing withdrawal positions offered by liberal Democrats in the Senate. "Although unity is important, it is not the most important value. I...