When the Georgian parliament declared a state of emergency in the territory of South Ossetian AO on 12 December 1990, troops from both Georgian and Soviet interior ministries were sent to the region. After the Georgian National Guard was formed in early 1991, Georgian troops entered Tskhinvali on 5 January 1991. The 1991–92 South Ossetia War was characterised by general disregard for international humanitarian law by uncontrollable militias, with both sides reporting atrocities. The Soviet military facilitated a ceasefire as ordered by Mikhail Gorbachev in January 1991. In March and April 1991, Soviet interior troops were reported actively disarming militias on both sides, and deterring the inter-ethnic violence. Zviad Gamsakhurdia asserted that the Soviet leadership was encouraging South Ossetian separatism in order to force Georgia not to leave the Soviet Union. Georgia declared its independence in April 1991.