Poland is reinforcing its border crossings with Ukraine after Russian drone strikes just miles from the NATO member's frontier over the weekend.

Poland is reinforcing its border crossings with Ukraine after Russian drone strikes just miles from the NATO member's frontier over the weekend. Polish military engineers are building fortifications using containers filled with sand or gravel that can serve as blast walls, alongside new observation and guard posts. Work is underway around the Dorohusk, Medyka and Korczowa crossings. Poland's defense minister said recent Russian actions threaten the security of all Europe.