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In page Nagorno-Karabakh War:

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Starting in late 1991, when the Azerbaijani side started its counter-offensive, the Armenian side began targeting Azerbaijani villages. According to Memorial, the villages Malibeyli and Gushchular, from which Azerbaijani forces regularly bombarded Stepanakert,[2][3][4] were attacked by Armenians where the houses were burned and dozens of civilians were killed. Each side accused the other of using the villages as strategic gathering points, covering the artillery positions.[1] On 19 December, Internal Ministry troops began to withdraw from Nagorno-Karabakh, which was completed by 27 December.[5] With the collapse of the Soviet Union and the withdrawal of internal troops from Nagorno-Karabakh, the situation in the conflict zone became uncontrollable.