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 for a revolution... I knew that people would not support us if we decided to keep power without such support. For unknown reasons, Karmal was invited back to Kabul by Najibullah, and "for equally obscure reasons Karmal accepted", returning on June 20, 1991. If Najibullah's plan was to strengthen his position within the Watan Party (the renamed PDPA) by appeasing the pro-Karmal Parchamites, he failed - Karmal's apartment became a center for opposition to Najibullah's government. When Najibullah was toppled in 1992, Karmal became the most powerful politician in Kabul through leadership of the Parcham. However, his negotiations with the