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.

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.

‘Russians lie about everything’ — Ukraine hits out at Kremlin claims after yet another drone strike on Kyiv

“This is a deliberate tactic of terror,” Tymur Tkachenko, head of the Kyiv City Military Administration, said.

The Kyiv IndependentTim Zadorozhnyy

Ukraine’s military intelligence (HUR) ignited an electrical substation during a sabotage operation in the Russian city of Kaliningrad, causing $5 million in damage and cutting electricity to a military production site, a source in HUR told the Kyiv Independent.

In the early hours of June 14, Ukrainian agents drained the coolant from the substation’s power transformer before setting the facility on fire. The inferno inflicted major damage on the facility and caused a power cut, impacting nearby Russian military sites.

"We once again remind you that Russia no longer has a rear either in the east, in the west, or anywhere else on the planet. Everything Russian involved in the war against Ukraine will burn, sink, and be destroyed regardless of its level of protection or location," the source said.

Ukraine continues to carry out numerous secretive attacks within Russia and occupied Ukrainian territories, targeting military sites, like airfields, as well as key infrastructure like railways and oil refineries.

The attacks involve HUR, Ukraine’s Security Service (SBU) as well as partisan and sabotage groups.

HUR was behind explosions near Desantnaya Bay in Russia's far eastern Vladivostok on May 30, which reportedly damaged military personnel and equipment. The operations took place approximately 6,800 kilometres from the Ukrainian border, making it Ukraine's furthest incursion into Russian territory, if confirmed.

On June 1, the SBU launched Operation Spiderweb, a game-changing drone attack on four key Russian military airfields, damaging 41 planes, including heavy bombers and rare A-50 spy planes.

Ukrainian drones destroy Russian air defense systems in occupied Zaporizhzhia Oblast, military intelligence says

Ukraine’s military intelligence (HUR) destroyed three Russian air defense systems using drones in the occupied Zaporizhzhia Oblast on June 14, HUR says.

The Kyiv IndependentVolodymyr Ivanyshyn