BAGHDAD, Iraq - President Bush told Iraq's new leader in a surprise face-to-face visit on Tuesday that the fate of his war-scarred country was in Iraq's own hands. Bush was pressed in turn not to withdraw U.S. troops too quickly. "There's a worry almost to a person that we will leave before they are capable of defending themselves," Bush said as he flew back to the United States after his lightning, long-distance trip to meet with Prime Minister Nouri al-Maliki.