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
Assadullah Sarwari Asadullah Amin in October 1979. In September 1979 Sarwari was involved in a pro-Nur Muhammad Taraki plot to oust Prime Minister Hafizullah Amin. After the failure of the plot, he and his comrades (the 'Gang of Four') escaped to the Soviet Embassy, where he was given asylum until the Soviet invasion and the fall of Amin in December 1979. After the invasion, under the government of Babrak Karmal, Sarwari was first given the task of deputy prime minister, but he was soon removed from the government and posted as ambassador to Mongolia from 1980 to 1986. In January 1980, Sarwari