Satellite images reveal that Russia has expanded and modernized at least five nuclear-related facilities near European borders in recent years, Swedish broadcaster SVT reported on June 16, citing new imagery obtained from Planet Labs.
One of the most notable developments is in Kaliningrad, where the suspected nuclear weapons storage site has undergone significant reconstruction.
Images taken in May 2025 show the addition of triple-layered fencing, new buildings, and advanced communications equipment. Polish Foreign Minister Radoslaw Sikorski previously said that up to 100 tactical nuclear warheads might be stored at the site.
Kaliningrad, a militarized Russian exclave between Poland and Lithuania, is a key concern for NATO because of its advanced missile systems and expanding nuclear infrastructure.
A map of the Baltic Sea Region. (Lisa Kukharska / The Kyiv Independent)
The Osipovichi base in Belarus, a former Soviet nuclear storage facility, is also being renovated. Satellite imagery shows new air defense installations and a modernized loading platform for rail-based logistics.
In Novaya Zemlya, a remote Arctic archipelago long linked to Soviet-era nuclear testing, several new buildings have appeared, reinforcing its role as a potential site for future test activities.
On the Kola Peninsula, near the borders with Finland and Norway, Russia has built about 50 storage bunkers for submarine-launched ballistic missiles and constructed a specialized pier for loading those missiles onto submarines, according to the imagery.
Swedish Defense Minister Pal Jonson responded to the findings, saying Stockholm is "closely monitoring" Russian nuclear capabilities. Sweden officially joined NATO in March 2024 after years of non-alignment, citing escalating Russian threats as a primary reason.
The Kremlin has repeatedly used nuclear threats to pressure Ukraine and Western countries since the start of its full-scale invasion in February 2022.
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