The 65-mile border that separates Lithuania and Poland has become NATO's biggest nightmare, and a potential Russian lifeline.

Countries on Europe’s eastern flank received ... He described the “tough protection" of borders as a "sacred duty.” Poland’s borders also make up the 27-nation EU’s external frontier.

[Alexandra Brzozowski/Euractiv] POŁOWCE, Poland ... 30,000 attempted border crossings were recorded – an average of 100 per day – primarily by young men from countries such as Ethiopia ...