Babrak Karmal have so far not opted for concrete and constructive positions." During Karmal's rule Afghan–Pakistani relations remained hostile; the Soviet intervention in Afghanistan was the catalyst for the hostile relationship. The increasing numbers of Afghan refugees in Pakistan challenged the PDPA's legitimacy to rule. The Soviet Union threatened in 1985 that it would support the Baloch separatist movement in Pakistan if the Pakistani government continued to aid the mujahideen in Afghanistan. Karmal, problematically for the Soviets, did not want a Soviet withdrawal, and he hampered attempts to improve relations with Pakistan since the Pakistani government had refused to recognise the PDPA
Babrak Karmal 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. Najibullah was appointed to the PDPA Secretariat in November 1985. During Karmal's March 1986 visit to the Soviet Union, the Soviets tried to persuade Karmal that he was too ill to govern, and that he should resign. This backfired, as a