In August 1990, an insurrection took place in Croatia, centred on the predominantly Serb-populated areas of the Dalmatian hinterland around the city of Knin, parts of the Lika, Kordun, and Banovina regions, and settlements in eastern Croatia with significant Serb populations. These areas were subsequently named the Republic of Serbian Krajina (RSK) and after declaring its intention to integrate with Serbia, the Government of Croatia declared the RSK a rebellion. By March 1991, the conflict had escalated and the Croatian War of Independence erupted. In June 1991, Croatia declared its independence as Yugoslavia disintegrated. A three-month moratorium followed, after which the decision came into effect on 8 October. The RSK then initiated a campaign of ethnic cleansing against Croat civilians, expelling most non-Serbs by early 1993. By November 1993, fewer than 400 ethnic Croats remained in the United Nations (UN) protected area known as Sector South, and a further 1,500 – 2,000 remained in Sector North.