 One reason why the mujahideen succeeded here, was that once the Soviet Army had left the country, supplying the Government forces in Khost through the air had become too difficult.When the Government's garrison had run out of supplies, the DRA troops massively surrendered to the mujahidin.After an eleven-year siege, Khost fell to Jalaluddin Haqqani's troops, that were in east Afghanistan, on April 11, 1991, following a negotiated surrender of the communist garrison.