The Danish Straits at the centre of tensions between Russia and Western countries

In August of that year, a Russian warship anchored in Danish waters for over a week. For many it was another episode in a long string of provocations, which has been accompanying the passages of Russian warships by the Danish Straits for months. For Danish military intelligence, however, it was a warning signal: Russia tests not only the limits of patience, but also the response procedures. And it's getting bolder.

Towards confrontation, without declaring war

As revealed at the press conference, Thomas Ahrenkiel, head of Danish Military Intelligence (FE), Russian units regularly apply military coercion measures to Danish helicopters and patrol ships.It's all about intentional acts.the guidance of tracking radars and the indication of air and water weapons. This was not about random tracking, but about demonstration activities in the immediate range of Danish units.

At the same time, Russian ships choose collision courses, forcing maneuvers to dodge. They use active sonars and disruptive systems, leading to at least once a GPS signal interference in Danish airspace. All of this together consists of a catalogue of activities known from the doctrine of hybrid war. Actions that do not exceed the formal limit of aggression, but exert pressure and create an atmosphere of uncertainty.

Russian fleet as a tool of pressure

The emphasis on the presence of one of the Russian anchored ships in Danish waters for over a week was not accidental. According to Danish intelligence, this could be a signal of readiness to respond directly to NATO's movements, including possible attempts to limit the activities of the so-called shadow fleet, or civilian oil tankers associated with the Russian fuel sector.In this contextdemonstrations of the Russian fleet gain not only a tactical but also a strategic dimension.

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WaterBaltic Sea under Russian pressure

The Baltic, treated a decade ago as a stable and predictable reservoir, becomes the scene of growing military activity. The countries of the region, with Denmark in the lead, see the scale of the threat and the importance of the information advantage, but also the physical presence. Information exchange is increasing and NATO strengthens recognition and response systems. However, it is the Danes who bear the burden of confronting the Russian tactics directly on the border.

The Danish Navy increases patrol presence while maintaining strict discipline of contact rules. It does not react impulsively – it records every incident, analyses and transmits data to allies. It's a situation control strategy, not an emotional response.

Hybrid War as a blackmail tool

Russia does notHe needs a formal war.to test NATO cohesion and the willingness of its members to respond. Incidents in the Danish Straits are not independent excesses of flotilla commanders, but part of a broader strategy of force projection. Playing with fire continues, and its goal is not to confront, but to subdue the Baltic space of Russian narrative.

How far will Russia go without a physical weapon? And where is the limit of Western tolerance for "actions below the threshold"? The answers to these questions will determine the future of maritime governance in Northern Europe. Today the Baltic is silent, but that does not mean that it does not become a battlefield.

A silence that does not bring peace

What is happening today in the Baltic is no longer a series of incidents. This is a new logic of confrontation – cool, planned, systematic. Russia plays chess, while the West continues to react as if the game was playing checkers. The Kremlin tests: how many boundaries can be moved before someone says "enough". And how long the Baltic will remain a place where every move is measured, not in nautical miles, but in degrees of risk.

Denmark, seemingly a small player, has become one of the most important voltage sensors in Northern Europe. Its territorial waters are not only geographicalNATO border, but also the threshold on which the game begins for control of the sea arteries of the West. From oil and gas transport to offshore cables and allied convoys – everything that flows through the Danish Straits has a strategic dimension. Moscow understands perfectly well that whoever controls these waters affects the security of the entire region.

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For Moscow, every disrupted signal, every targeted helicopter, every ship forced to change course is a small victory – proof that it can shape the operating situation below the war threshold. For NATO, it is a test of patience, cohesion and political courage. The hybrid war, which is described by Danish intelligence, no longer takes place in cyberspace or propaganda – it takes place on radars and sonars, in the space of radio waves and GPS signals.

You can't see the bang of cannons, but the voltage is thick as the fog on the Baltic. Every incident – invisible to the public, but noted in reports – is another step in the war on perception. The one who first considers that the silence of the sea is not peace but a warning.

Because the sea – like history – is never really peaceful. All you have to do is listen to his silence.

Written by Mariusz Dasiewicz