Central Asia, known as the home of Tamerlane and the Silk Road, is a crossroads of great cultures and civilizations. In 1991 five nations at the heart of the region--Kazakstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan-- suddenly became independent. Today they sit strategically between Russia, China, and Iran and hold some of the world's largest deposits of oil and natural gas. Long-suppressed ethnic identities are finding new expression...