JOHANNESBURG, South Africa -- Negotiators are struggling to bring rich and poor nations together on the most contentious element facing today's opening of the world development summit: money. Developing nations want promises from the West to increase aid and give greater access to its markets, while the United States and other Western nations are resisting any new aid targets in the summit' s final plan. They say they want to discuss concrete projects. The outstanding issues are the most difficult to resolve, said Nitin Desai, secretary-general of the World ...