Serbia's Prime Minister Ana Brnabic, second left, is welcomed by European Commission President Ursula von der Leyen, left, European Council President Charles Michel, second right, and Spain's Prime Minister Pedro Sanchez during arrivals for an EU-Western Balkans summit at the European Council building in Brussels, Wednesday, Dec. 13, 2023. European Union and Western Balkans leaders meet in Brussels Wednesday to discuss political and policy engagement, economic foundations and the impact of Russian aggression against Ukraine. (Olivier Hoslet, Pool photo via AP)