After the Soviet withdrawal and the departure of foreign advisors, the Air Force declined in terms of operational capability. With the collapse of the Najibullah Government in 1992, the Air Force splintered, breaking up amongst the different mujahideen factions in the ongoing civil war. By the end of the 1990s, the military of the Taliban maintained five supersonic MIG-21MFs and 10 Sukhoi-22 fighter-bombers. They also held six Mil Mi-8 helicopters, five Mi-35s, five L-39Cs, six An-12s, 25 An-26s, a dozen An-24/32s, an IL-18, and a Yakovlev.