Mikhail Gorbachev, then General Secretary of the Central Committee of the Communist Party of the Soviet Union, said, "The main reason that there has been no national consolidation so far is that Comrade Karmal is hoping to continue sitting in Kabul with our help." Karmal's position became less secure when the Soviet leadership began blaming him for the failures in Afghanistan. Gorbachev, worried over the situation, told the Soviet Politburo "If we don't change approaches evacuate Afghanistan, we will be fighting there for another 20 or 30 years." It is not clear when the Soviet leadership began to campaign for Karmal's dismissal, but Andrei Gromyko discussed the possibility of Karmal's resignation with Javier Pérez de Cuéllar, the Secretary-General of the United Nations in 1982. While it was Gorbachev who would dismiss Karmal, there may have been a consensus within the Soviet leadership in 1983 that Karmal should resign. Gorbachev's own plan was to replace Karmal with Mohammad Najibullah, who had joined the PDPA at its creation. Najibullah was thought highly of by Yuri Andropov, Boris Ponomarev and Dmitriy Ustinov, and negotiations for his succession may have started in 1983. Najibullah was not the Soviet leadership's only choice for Karmal's succession; a GRU report noted that the majority of the PDPA leadership would support Assadullah Sarwari's ascension to leadership. According to the GRU, Sarwari was a better candidate as he could balance between the Pashtuns, Tajiks and Uzbeks; Najibullah was a Pashtun nationalist. Another viable candidate was Abdul Qadir, who had been a participant in the Saur Revolution.