Romania scrambled fighter jets on Wednesday after a drone breached its airspace during a Russian attack on Ukrainian infrastructure near the border, according to the country's defense ministry.

Polish and allied aircraft were deployed early Wednesday to safeguard Poland’s airspace after Russia carried out airstrikes in western Ukraine near the border with Poland, the country’s armed forces announced.

A Russian military aircraft flew over a German Navy frigate in the Baltic Sea, German Defence Minister Boris Pistorius confirmed on Wednesday.

Swedish fighter jets intercepted a Russian military aircraft after it briefly violated Sweden's airspace on Friday east of the Baltic island of Gotland, the Nordic country's armed forces said on Saturday.