Insurgency in the Preševo Valley

The insurgency in the Preševo Valley was a 1999–2001 armed conflict between the Federal Republic of Yugoslavia and the ethnic Albanian separatists of the Liberation Army of Preševo, Medveđa and Bujanovac . There were instances during the conflict in which the Yugoslav government requested KFOR support in suppressing UÇPMB attacks since they could only use lightly armed military forces as part of the Kumanovo Treaty that ended the Kosovo War, which created a buffer zone between FR Yugoslavia and Kosovo, that the bulk of Yugoslav armed forces could not enter.
Before the insurgency Preševo Valley was home to approximately 100,000 people, of whom 70,000 were Albanians and another 30,000 Serbs. Albanians make up to 95% of Preševo, 40% of Bujanovac and 10% of Medveđa population. The region is sometimes referred to as Eastern Kosovo by Albanians.
The Albanian-populated region became a part of Serbia in 1913, after First Balkan War

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