WHEN Prime Minister Atal Behari Vajpayee steps off the plane in South Africa for the 12th summit of the nonaligned countries, there will be a sense of poetic justice. A Non-Aligned Movement (NAM) summit—a product of the end of colonialism—will finally be hosted by a country that under the leadership of one of the greatest figures of all time, Nelson Mandela, fought off decades of white imperialism. But Vajpayee is bound to have mixed emotions because India's relations with this brave new world are already showing signs of discord.