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US soldiers serving in NATO-led peacekeeping force KFOR, place a barbed wire at a checkpoint on the road near the northern Kosovo border crossing of Jarinje, along the Kosovo-Serbia border, Kosovo, Sunday, Dec. 18, 2022. Tensions between Serbia and Kosovo flared anew during the past week after Serbs erected barricades on the main roads in the north of the province to protest the arrest of a former Kosovo Serb police officer. (AP Photo/Marjan Vucetic)