Polish soldiers, part of the peacekeeping mission in Kosovo KFOR, right, and Kosovo police officers guard a municipal building in the town of Zvecan, northern Kosovo, Monday, May 29, 2023. Serbia condemned NATO-led peacekeepers stationed in neighboring Kosovo for their alleged failure to stop "brutal actions" by Kosovo police against ethnic Serbs, and said that its armed forces stationed near the border will remain on the highest state of alert until further notice. (AP Photo/Bojan Slavkovic)