The inaugural Eastern Flank security summit took place in Helsinki on 16 December 2025, convening leaders from Estonia, Latvia, Lithuania, Poland, Slovakia, Czechia, Romania, and Bulgaria. The meeting was driven by concerns over the security of the EU's eastern border adjacent to Russia, emphasizing shared responsibility for defense and cooperation. The summit, supported by Finland and co-initiated by its prime minister and Poland's prime minister, resulted in a declaration calling for increased military presence and coordinated political efforts to strengthen security. European Commission President Ursula von der Leyen backed the initiative, highlighting the importance of solidarity and preparedness in the face of regional threats. The summit also underscored the strategic significance of the Baltic and eastern European region in NATO and EU security architectures.

The inaugural Eastern Flank security summit took place in Helsinki on 16 December 2025, convening leaders from Estonia, Latvia, Lithuania, Poland, Slovakia, Czechia, Romania, and Bulgaria. The meeting was driven by concerns over the security of the EU's eastern border adjacent to Russia, emphasizing shared responsibility for defense and cooperation. The summit, supported by Finland and co-initiated by its prime minister and Poland's prime minister, resulted in a declaration calling for increased military presence and coordinated political efforts to strengthen security. European Commission President Ursula von der Leyen backed the initiative, highlighting the importance of solidarity and preparedness in the face of regional threats. The summit also underscored the strategic significance of the Baltic and eastern European region in NATO and EU security architectures.