Swedish Chief of Defense Lieutenant-General Michael Claesson warned on April 16, 2026, that Russia could launch a limited maritime incursion targeting one or more Baltic Sea islands to politically pressure NATO and test the alliance's unity. This scenario could occur unexpectedly, as part of Russia's broader strategy to probe NATO's resolve. The warning follows heightened Russian naval activity in the Baltic Sea involving escorting shadow fleet vessels and frequent NATO interactions. Military planners have shifted some focus to maritime threats, simulating potential Russian landings on key strategic islands such as Gotland, Bornholm, Saaremaa, and Hiiumaa. Intelligence also suggests that Russia might target smaller, less significant islands scattered throughout the Baltic Sea. A ceasefire or war end in Ukraine may allow Russia to redeploy forces nearer to NATO borders, increasing tension. This warning is set against recent Russian airspace violations over Baltic states, including incidents involving MiG-31 fighters in Estonia and Latvia, drone strikes linked to Ukraine's operations near Estonian airspace, and NATO's bolstering of regional defenses including the 2024 Baltic defense line establishment.

Swedish Chief of Defense Lieutenant-General Michael Claesson warned on April 16, 2026, that Russia could launch a limited maritime incursion targeting one or more Baltic Sea islands to politically pressure NATO and test the alliance's unity. This scenario could occur unexpectedly, as part of Russia's broader strategy to probe NATO's resolve. The warning follows heightened Russian naval activity in the Baltic Sea involving escorting shadow fleet vessels and frequent NATO interactions. Military planners have shifted some focus to maritime threats, simulating potential Russian landings on key strategic islands such as Gotland, Bornholm, Saaremaa, and Hiiumaa. Intelligence also suggests that Russia might target smaller, less significant islands scattered throughout the Baltic Sea. A ceasefire or war end in Ukraine may allow Russia to redeploy forces nearer to NATO borders, increasing tension. This warning is set against recent Russian airspace violations over Baltic states, including incidents involving MiG-31 fighters in Estonia and Latvia, drone strikes linked to Ukraine's operations near Estonian airspace, and NATO's bolstering of regional defenses including the 2024 Baltic defense line establishment.