Poland briefly closes airspace as NATO increases presence in the Baltic Sea

Al Jazeera 

Can Ukraine restore its pre-war borders? Is Russia testing NATO with aerial incursions in Europe? Poland has briefly closed part of its airspace southeast of capital Warsaw, citing "unplanned military activity", as Russia launches a new wave of strikes against Ukraine. The deployment on Sunday of Polish and allied aircraft in the country's airspace comes as the transatlantic security bloc NATO announced that it is upgrading its mission in the Baltic Sea in response to drone incursions in Denmark and reported drone sightings in Norway. In the latest incident, the Polish armed forces said it scrambled aircraft to ensure the security of its airspace after Russia launched strikes on Ukraine.