Denmark’s intelligence service warns that Russia has become more aggressive toward NATO countries in the Baltic Sea region, increasing the risk of military confrontation. The agency says Denmark could be directly involved if tensions escalate further.
Russia’s Military Behavior Near Denmark
Russia’s military activity in the Baltic Sea has become increasingly bold according to the Danish Defense Intelligence Service, FE. In its latest annual threat assessment, the agency reports that Russian naval vessels and aircraft have behaved more aggressively near NATO countries, including Denmark. FE notes that Russian ships have often manned weapon systems when Danish naval or air units were nearby, sometimes even within Danish territorial waters.
At the same time, Russia has expanded electronic warfare efforts, including GPS interference that disrupts both civil and military navigation in the region. FE says these provocations show clear intent to intimidate NATO forces and deter them from actions that threaten Russian interests.
Growing Strategic Risks in the Baltic Region
FE’s analysis finds that Russia views the Baltic as a key military theater. The agency expects Moscow to boost its capabilities by deploying more combat aircraft and adding long-range missile-equipped ships to the Baltic Fleet. Although these plans face delays due to the ongoing war in Ukraine, the long-term goal remains to strengthen Russia’s position in northern Europe.
The intelligence report warns that the Baltic Sea is the region where a future Russian attack against NATO is most likely to occur. This would also pose the highest risk of Denmark becoming directly drawn into a military conflict.
A Radicalized Russia Across the Sea
Experts describe Russia as a heavily militarized state seeking to reshape its strategic environment. The Baltic region’s importance dates back centuries—it is Russia’s route to global waters and now borders eight NATO members. Because the distances are short and the area is densely militarized, even small incidents could quickly escalate.
Analysts argue that Denmark and its allies must take hybrid threats such as sabotage, cyberattacks, and disinformation campaigns very seriously. These could target Danish infrastructure or attempt to destabilize European unity. Eventually, Moscow might also test NATO’s military readiness, especially if U.S. support for Europe appears uncertain.
Russia Defends Its “Shadow Fleet”
FE highlights that Russia invests large resources in protecting its so-called shadow fleet, a collection of ships used to transport sanctioned oil and gas. The fleet helps Russia bypass international sanctions, providing crucial revenue since about one-third of the country’s income comes from energy exports.
In spring 2025, Russian patrol ships reportedly intervened in the Gulf of Finland to prevent Estonia’s coast guard from detaining one of these shadow tankers. Although the situation did not escalate into direct combat, such incidents underline the risk of armed clashes between Russian and NATO forces in the Baltic.
The report adds that these tankers often have unclear ownership structures, making sanctions enforcement difficult. FE concludes that while small confrontations may occur, they would not necessarily lead to a full-scale war. Still, the potential for sudden escalation remains high.
Possible Paths Toward Future Conflict
FE estimates that Russia could be ready for a localized conflict within six months, a regional war in two years, and a large-scale war in five years. Three conditions would need to be met: the war in Ukraine would have to end or freeze, the United States would need to signal restraint in European conflicts, and Europe’s rearmament would have to remain slow.
Recent global developments have reinforced these concerns. The United States has increased focus on the Pacific, raising doubts in Europe about America’s long-term commitment as the continent’s main security guarantor. Meanwhile, the war in Ukraine continues with no sign of resolution, and Russia appears confident it can sustain pressure on the West.
Given these shifts, Denmark and its NATO partners are already adapting. Military cooperation and readiness measures are expanding across Scandinavia as countries learn from Ukraine’s experience of modern conflict. This includes stronger defenses, cyber resilience, and closer regional coordination.
Sources and References
The Danish Dream: Denmark Increases Military Presence to Learn From Ukraine
The Danish Dream: Best Defense and Security Services in Denmark for Foreigners
DR: Rusland er blevet mere truende og aggressiv overfor NATO-lande i Østersøområdet
