WHILE campaigning in public for a speedy withdrawal of US troops from Iraq, Sen. Barack Obama has tried in private to persuade Iraqi leaders to delay an agreement on a draw-down of the American military presence. According to Iraqi Foreign Minister Hoshyar Zebari, Obama made his demand for delay a key theme of his discussions with Iraqi leaders in Baghdad in July. "He asked why we were not prepared to delay an agreement until after the US elections and the formation of a new administration in Washington," Zebari said in an interview. Obama insisted that Congress should be involved in...