BAGHDAD, Iraq -- Iraq's constitution seemed headed toward passage Sunday despite strong opposition from Sunni Arabs, who turned out in surprisingly high numbers in an effort to stop it. The apparent victory was muted, though, by the prospect that the result might divide the country further. Rejection seemed more unlikely as vote-counting continued across the country. In one key result, Ninevah, one of three crucial northern and central provinces that Sunni Arab opponents pushed hard to swing their way, appeared to have voted "yes" by a considerable margin. In London, Secretary of State Condoleezza Rice predicted the charter was likely...