When Amin became leader, he tried to reduce Afghanistan's dependence on the Soviet Union. To accomplish this, he aimed to balance Afghanistan's relations with the Soviet Union by strengthening relations with Pakistan and Iran. The Soviets were concerned when they received reports that Amin had met personally with Gulbuddin Hekmatyar, one of the leading anti-communists in Afghanistan. His general untrustworthiness and his unpopularity amongst Afghans made it more difficult for Amin to find new "foreign patrons". Amin's involvement in the death of Adolph Dubs, the American Ambassador to Afghanistan, strained his relations with the United States. He tried to improve relations by reestablishing contact, met with three different American chargé d'affaires, and was interviewed by an American correspondent. But this did not improve Afghanistan's standing in the eyes of the United States Government. After the third meeting with Amin, J. Bruce Amstutz, the American Ambassador to Afghanistan from 1979 to 1980, believed the wisest thing to do was to maintain "a low profile, trying to avoid issues, and waiting to see what happens". In early December 1979, the Ministry of Foreign Affairs proposed a joint summit meeting between Amin and Muhammad Zia-ul-Haq, the President of Pakistan. The Pakistani Government, accepting a modified version of the offer, agreed to send Agha Shahi, the Pakistani foreign minister, to Kabul for talks. In the meanwhile, the Inter-Services Intelligence (ISI), Pakistani's secret police, continued to train Mujahideen fighters who opposed the communist regime.