In this image taken off television by BBC Newsnight, Omar -- fourth from left -- attends a rally with Taliban troops before their victorious assault on Afghanistan's capital, Kabul, in 1996. The Taliban's aim is to impose its interpretation of Islamic law on Afghanistan and remove foreign influence from the country. Most of its members are Pashtun, the largest ethnic group in Afghanistan.
Tanks manned by Taliban fighters are decorated with flowers in front of the presidential palace in Kabul on September 27, 1996.
Taliban soldiers in Russian-made tanks fire on the forces of former Afghan defense minister Ahmad Shah Massood in October 1996.