A joint investigation by Scandinavian broadcasters (NRK, SVT, DR) and Estonian news site Delfi reveals a rapid expansion of Russian military infrastructure along the borders of Finland, Norway, the Baltics, and Poland. Satellite imagery from September 2025 to June 2026 shows a return to large-scale division structures; Finland potentially faces up to 80,000 Russian troops.
Analysis of Planet satellite data shows new military infrastructure in previously undeveloped areas along the entire western border, specifically targeting the flanks of Finland, Norway, the Baltics, and Poland.
Intelligence officials state the expansion indicates a return to large-scale division structures. This shift enables conventional warfare on a broader scale than the smaller tactical groups used in recent years. Nordic intelligence chiefs and NATO senior officers warn that Russia is preparing for potential conflict with European nations around the Baltic Sea.
Finland is particularly affected, with reports indicating the country faces up to 80,000 Russian troops. This expansion is a coordinated effort across the Nordic and Baltic flanks rather than a series of isolated incidents.
The buildup coincides with a “high-threat window” over the next one to three years. This period aligns with the time NATO requires to fully integrate and harden the new borders following the accession of Finland and Sweden.
The buildup follows the accession of Finland and Sweden to NATO, shifting the security architecture of the Baltic and Arctic regions. Intelligence officials describe the current period as a high-threat window while NATO works to integrate and harden these borders.