Ahmad Shah Massoud (Dari/Pashto: , ʔæhmæd ʃɒːh mæsʔuːd; September 2, 1953 September 9, 2001) was an Afghan politician and military commander. He was a powerful guerrilla commander during the resistance against the Soviet occupation between 1979 and 1989. In the 1990s, he led the government's military wing against rival militias; after the Taliban takeover, he was the leading opposition commander against their regime until his assassination in 2001.
Massoud came from an ethnic Tajik, Sunni Muslim background in the Panjshir Valley of Northern Afghanistan. He began studying engineering at Polytechnical University of Kabul in the 1970s, where he became involved with religious anti-communist movements around Burhanuddin Rabbani, a leading Islamist. He participated in a failed uprising against Mohammed Daoud Khan's government. He later joined Rabbani's Jamiat-e Islami party. During the Soviet–Afghan War, his role as a powerful insurgent leader of the Afghan mujahideen earned him the nickname "Lion of Panjshir" (شیر پنجشیر) among his followers. Supported by Britain's MI6 and to a lesser extent by the U.S. Central Intelligence Agency (CIA), he successfully resisted the Soviets from taking the Panjshir Valley. In 1992, he signed the Peshawar Accord, a peace and power-sharing agreement, in the post-communist Islamic State of Afghanistan. He was appointed the Minister of Defense as well as the government's main military commander. His militia fought to defend Kabul against militias led by Gulbuddin Hekmatyar and other warlords who were bombing the city, as well as later against the Taliban, who laid siege to the capital in January 1995 after the city had seen fierce fighting with at least 60,000 civilians killed.
Following the rise of the Taliban in 1996, Massoud, who rejected the Taliban's fundamentalist interpretation of Islam, returned to armed opposition until he was forced to flee to Kulob, Tajikistan, strategically destroying the Salang Tunnel on his way north.