Karmal observed in early 1983 that without Soviet intervention, "It is unknown what the destiny of the Afghan Revolution would be ... We are realists and we clearly realize that in store for us yet lie trials and deprivations, losses and difficulties." Two weeks before this statement Sultan Ali Keshtmand, the Chairman of the Council of Ministers, lamented the fact that half the schools and three-quarters of communications had been destroyed since 1979. The Soviet Union rejected several Western-made peace plans, such as the Carrington Plan, since they did not take into consideration the PDPA government. Most Western peace plans had been made in collaboration with the Afghan opposition forces. At the 26th Congress of the Communist Party of the Soviet Union (CPSU) Leonid Brezhnev, the General Secretary of the CPSU Central Committee, stated;