There is more to South-South cooperation than making the right noises at international gatherings. Developing nations are among the fastest-growing, most dynamic economies in the world, with giants China and India leading the way. And now several are working together: for example, India, Brazil and South Africa -- the three biggest democracies of the South -- have joined to create the IBSA alliance. Nascent efforts are under way in trade, investment, development, innovation, environment and human rights. But new challenges continue to appear on the global stage, and the South must maintain its footing.