Denmark has recently become a part of a significant initiative alongside Estonia, Latvia, Finland, Lithuania, Poland, Romania, and Bulgaria. The project involves the construction of a ‘drone wall’ aimed at enhancing security along the Eastern flank.
Source: http://www.euronews.com/my-europe/2025/09/23/we-cannot-wait-eu-calls-for-drone-wall-to-deter-russia-after-new-incident-in-denmark