 The Yugoslav People's Army ("Jugoslovenska Narodna Armija" – JNA) confiscated Croatia's Territorial Defence ("Teritorijalna obrana" – TO) weapons to minimize resistance.On 17 August, the tensions escalated into an open revolt of Croatian Serbs, centred in the predominantly Serb-populated areas of the Dalmatian hinterland around Knin (approximately north-east of Split), parts of the Lika, Kordun, Banovina and eastern Croatia.Serbia, supported by Montenegro and Serbia's provinces of Vojvodina and Kosovo, unsuccessfully tried to obtain the Yugoslav Presidency's approval of a JNA operation to disarm Croatian security forces in January 1991.