sentences:  In 1992, Russia agreed to end fuel shipments to Afghanistan, which triggered the collapse of Najibullah's regime.In April 1992, General Abdul Rashid Dostum defected to the forces of Ahmed Shah Massoud, and began to take control of Kabul.By April 14, 1992, Massoud and his forces took control of Charikar and Jabalussaraj in Parwan province without significant fighting.