NATO launches largest military exercise in the Baltics

On June 4, 2026, the BALTOPS (Baltic Operations 2026) exercises began in the waters of the Baltic Sea — one of NATO's largest and longest-running naval maneuvers.

The exercises will take place from June 4 to 19 and will be commanded by the US Sixth Fleet in cooperation with STRIKFORNATO.

For more than five decades, BALTOPS has been held annually, establishing itself as one of the most enduring allied traditions in the Baltics.

Today it stands as a cornerstone of NATO's collective defense on the northeastern flank: a region that, since Russia's full-scale aggression against Ukraine, has moved from the periphery of the Alliance's collective strategic thinking to its core, Defence24 reports.

Poland in the spotlight

This year, Poland has received a particularly notable distinction within BALTOPS. Unlike last year, when the exercises started from Warnemünde, the starting point for 2026 is Gdynia in the Bay of Gdansk – a symbolic recognition of Poland’s role as a key participant and a NATO frontline state. The maneuvers will conclude on June 19 in Kiel, in the heart of Germany’s Baltic coast.

The overall training area is vast, covering the western, southern and central Baltic, stretching from Skagen to the Gulf of Riga.

BALTOPS 2026 brings together 15 NATO countries — in addition to Poland: Belgium, Denmark, Estonia, Finland, France, Germany, Greece, Italy, Latvia, Lithuania, the Netherlands, Turkey, the United Kingdom, and the United States.

Operational scope

Planning for this year’s exercises took place in April in Turku, where the Finnish Naval Command hosted nearly 160 planners from all Allied countries. The very fact that Finland – a country that only joined NATO in 2023 – hosted the planning conference illustrates how quickly the Alliance’s Nordic-Baltic arm has gained operational maturity.

BALTOPS 2026 will begin with exercises in the western Baltic before moving east – to the Swedish island of Gotland, where allies will practice protecting and maintaining free sea lanes. Protecting these sea lanes is of paramount importance as the Baltic states remain connected to the rest of NATO territory only by a narrow land corridor, making maritime supply routes an economic lifeline.

Other key areas of training include surface and underground defense, amphibious operations, and air defense. Traditional elements also include mine countermeasures, convoy escort, and defense against unmanned aerial vehicles and missiles.

While the scale of BALTOPS 2026 is slightly lower compared to last year — with a portion of allied forces engaged in other regions, including the Middle East — the very fact that the exercises are being held at such a high level despite the distribution of resources speaks volumes about the priorities that NATO has in the Baltic region.

BALTOPS as an option for NB8 and NB8+

BALTOPS 2026 also fits within a broader political context — the rapidly deepening cooperation within the Nordic-Baltic Eight format, bringing together eight Nordic and Baltic states.

In 2026, the presidency of the NB8 is held by Estonia, which has made deepening regional defense integration and strengthening the group's strategic position on the international stage among its top priorities.

In April, NB8 foreign ministers pledged to deepen cooperation within the format, including through the Joint Expeditionary Force, with the aim of increasing situational awareness and intelligence sharing. The ministers also stressed that Russia remains the most serious, immediate and long-term threat to Euro-Atlantic security in all areas, requiring urgent, decisive and coordinated action.

Increased cooperation, increased agency, and deepening strategic cohesion with the Nordic-Baltic states offer Poland a natural path forward – a formal membership in the Nordic-Baltic Eight+.

Warsaw shares a convergent threat perception with the Nordic-Baltic countries, and its commitment to military modernization – including its naval forces – makes it a natural partner in the region’s security architecture. Moreover, the combined weight of the format’s member states will translate into real influence across Europe.

The strategic window of opportunity is open. Poland must seize it.

The Baltic Sea as an anchor of transatlantic relations

The BALTOPS exercises constitute a platform of unique operational and political significance. They represent an opportunity to deepen interaction not only among European nations, but also with the United States — which, despite the current transatlantic turning point, remains one of Europe's most indispensable allies.

The lead ship for BALTOPS 2026 is the USS Mount Whitney (LCC-20), the flagship of the U.S. Navy’s Sixth Fleet, which is typically homeported in the Mediterranean. Its annual presence in the Baltic is a signal that cannot be underestimated – especially at a time when Washington’s commitment to European security is increasingly being questioned. Moreover, increased cooperation and investment in sovereign capabilities, particularly among the Nordic-Baltic Eight+ states, creates space for a stronger transatlantic relationship.

Therefore, the Baltics are not just a theater for exercises. They are a connecting force for transatlantic unity and a platform through which Europe builds its true capabilities in one of the most critical military regions of the continent. For Poland, it is equally a precedent for an even deeper strategic strengthening in the region and for strengthening cooperation with the Nordic-Baltic states.

The GeoPost