and Rhodesia began targeting ZNDF outposts. Growing Zambian war weariness was a significant factor in Kaunda's influencing the guerrilla movements in Rhodesia to seek peace, resulting in a negotiated end to that conflict. Kaunda also bowed to South African pressure and ordered PLAN to close its rear base facilities in Zambia by 1979. At the same time, the ZNDF embarked on a 70 million kwacha modernisation program with assistance from the Soviet Union. The Soviets provided the Zambian Army with tanks, wheeled armored vehicles, and technical instruction on especially generous terms; the Zambian Air Force received its first fighter aircraft in the form of a Mikoyan-Gurevich MiG-21 squadron at the same time. End of the Cold War and reforms In October 1980, two ZNDF officers, Brigadier Godfrey Miyanda and Colonel Patrick Mkandawire were arrested for planning a coup d'état with the support of an exiled Congolese insurgent movement, the Front for Congolese National Liberation (FLNC). The plot involved arming the FLNC with ZNDF weaponry and later providing that movement with rear operating bases in Zambia as a reward for their efforts if the coup succeeded. The ZNDF and the police apprehended the conspirators before they had opportunity to set the coup in motion and later raided the FLNC's base camp, detaining most of the insurgents. Due in part to the extreme secrecy surrounding the ZNDF's budget and the refusal of the UNIP to allow parliamentary debate on the topic, a number of problems concerning military funding were covered up rather than addressed. For example, the facilities at ZNS training camps were so inadequate that typhoid outbreaks became common among recruits. This was due to lack of funds to filter the camps' drinking water. After a particularly serious typhoid outbreak between 1980 and 1981, the government was forced to suspend and later stop the compulsory national service programme. In November 1982, the ZNDF killed Adamson Mushala in an ambush outside Solwezi, although his followers continued to carry out operations under the leadership of Alexander Saimbwende. The DSC continued to pose a sufficient threat that an Italian mineral survey team had to be evacuated from Northwestern Province in 1984 after being targeted by the guerrillas. Nevertheless, the erosion of South African support ensured that its forces remained small and poorly armed. Mushala and later Saimbwende turned to ivory poaching to sustain their war effort against the ZNDF. As the Mozambican Civil War