EU member states Poland, Estonia, Lithuania and Latvia are calling on the bloc to provide more support for military and civilian protection for their borders in light of their geographical proximity to Russia and Belarus. In a letter to European Commission President Ursula von der Leyen and European Council President Charles Michel, the four Eastern European countries, who either border Belarus, Russia or both, said “our countries can feel what it means to be the EU’s frontline states,” more than two years after Russia’s full-scale invasion of Ukraine in 2022. Stressing their “unwavering suppo…