Lithuania has revealed plans to dig a 30-mile-wide ribbon of defences on its borders with Russia and Belarus that will include minefields and bridges set to blow up in case Russia invades.
The plans are part of a Baltic-wide push for more defence, amid increasing aggression from Russia and its allies.
Estonia, Latvia and Lithuania, alongside Poland, have been fortifying their borders, adding obstacles and redoubts to existing fences. All four are also looking for EU funding for these projects.
When complete, having been in the works since early last year, the Baltic defence line is estimated to be more than 940 miles long and will limit Russia's ability to launch attacks from its own territory, Kaliningrad and Belarus.
Lithuania, in particular, began setting up dozens of so-called 'engineering parks' filled with 'counter-mobility' equipment.
