President of Montenegro Jakov Milatovic arrives to attend the EU-Western Balkans summit at the European headquarters in Brussels, on December 13, 2023. EU chief Ursula von der Leyen on December 13, 2023 urged the bloc's 27 leaders to back massive financial aid for Ukraine and Kyiv's ambitions for membership talks, ahead of a crunch summit. (Photo by KENZO TRIBOUILLARD / AFP)