After the war, the KLA was transformed into the Kosovo Protection Corps, which worked alongside NATO forces patrolling the province. In the following years, however, an ethnic Albanian insurgency emerged in southern Serbia (1999–2001) and in Macedonia (2001). The EU condemned what it described as the "extremism" and use of "illegal terrorist actions" by the group active in southern Serbia. Since the war, many of the KLA leaders have been active in the political leadership of the Republic of Kosovo.