In an era of failing states and ethnic conflict, violent challenges from dissenting groups in the former Yugoslavia, the former Soviet Union, several African countries, and India give cause for grave concern in much of the world. And it is in India where some of the most turbulent of these clashes have been taking place. One resulted in the creation of Pakistan, and militant separatist movements flourish in Kashmir, Punjab, Manipur, Mizoram, Nagaland,...