President Bush told world leaders at the G8 Summit in Georgia on Wednesday that he hopes NATO will take on a bigger role in Iraq now that the United Nations has endorsed the country's interim government. "There's going to be some constraints, obviously," Bush said at the annual meeting of of the world's eight most industrialized nations on Sea Island. "A lot of NATO countries are not in a position to commit any more troops. We fully understand that." "But I do think NATO ought to stay involved, and I think we have a good chance of getting that done,"...