NATO's BALTIC VULNERABILITY: HOW A GERMAN WAR GAME REVEALED EUROPE's MOST DANGEROUS POST-UKRAINE SECURITY SCENARIO

A Warning from a Closed-Door 
Military Simulation

While much of Europe is focused on the possibility of a ceasefire in Ukraine, a military simulation conducted in Germany suggests that the period immediately after the war could become even more dangerous for European security.

In December 2025, military experts, diplomats, and strategic analysts gathered at Germany's Helmut Schmidt University for a classified-style war game examining a hypothetical crisis in late 2026. The scenario assumed that active combat in Ukraine had ended following a ceasefire agreement, the front line had effectively frozen, and Russia retained control over occupied territories.

Among the participants was Franz-Stefan Gady, one of Europe's most respected military analysts and an associate fellow of the International Institute for Strategic Studies (IISS). Assigned the role of Russia's Chief of the General Staff, Gady was tasked with creating a military crisis on NATO's eastern flank and forcing European leaders to respond.

The outcome was deeply troubling.

The simulation exposed significant vulnerabilities in NATO's political decision-making process, Europe's military readiness, and the Alliance's ability to respond rapidly to a limited but highly coordinated Russian operation in the Baltic region.
Most importantly, the exercise demonstrated that Russia may not need to defeat NATO militarily to achieve strategic success. It may only need to create enough uncertainty, fear of escalation, and political hesitation to fracture Alliance cohesion.
 
The Post-Ukraine Threat Environment
A common assumption among policymakers is that a ceasefire in Ukraine would reduce tensions and improve stability across Europe.
The war game challenged this assumption.
According to the scenario, a ceasefire would allow Russia to redirect military resources, rebuild combat formations, replenish equipment, and shift strategic attention toward other areas of confrontation.
By late 2026, Russia would have accumulated nearly five years of continuous combat experience. Its military would have absorbed hard lessons from modern warfare, particularly in drone operations, electronic warfare, precision targeting, artillery coordination, and battlefield adaptation.
Meanwhile, European NATO members would still be struggling to expand military production, rebuild stockpiles, and modernize their forces.
The result would be a temporary but potentially dangerous imbalance.
Europe's military capabilities could be at their weakest relative to Russia precisely when Moscow becomes most capable of exerting military pressure elsewhere.
 
The Strategic Logic Behind the Russian Plan
The Red Team's objective was not to conquer Europe.
Instead, it was to destroy NATO's credibility through a limited military operation designed to expose political divisions within the Alliance.
The scenario began with a familiar pattern.
Following the ceasefire in Ukraine, Moscow publicly offered Germany renewed economic cooperation and a gradual return to pre-war relations. Simultaneously, Russia increased political pressure on the Baltic states while claiming that Russian-speaking populations and residents of Kaliningrad were facing a humanitarian emergency.
Joint Russian-Belarusian military exercises created the ideal cover for force deployments.
Although NATO observed approximately 12,000 Russian troops remaining in Belarus after the exercises concluded, political leaders hesitated to interpret the deployment as preparation for an attack.
That hesitation proved critical.
 
The Attack on Lithuania
The military concept was both simple and effective.
Russian forces would launch a rapid operation aimed at severing the connection between Poland and the Baltic states through the Suwalki Corridor - a narrow stretch of territory between Belarus and Kaliningrad that has long been considered NATO's most vulnerable geographic chokepoint.

The attacking force included:
•    Elements of the 1st Guards Tank Army
•    The 76th Guards Air Assault Division
•    The 11th Army Corps based in Kaliningrad
•    Components of the 20th Guards Combined Arms Army
•    Supporting forces from the Leningrad Military District
 

Together, the wider operation involved approximately 100,000 Russian personnel, although only a fraction would participate directly in the initial assault.
The attack envisioned a rapid advance from Belarus into southern Lithuania while forces from Kaliningrad simultaneously moved eastward.
Their objective was to establish a land bridge near Marijampole within twenty-four hours.
Once achieved, the Baltic states would effectively be isolated from NATO reinforcement routes.
Special operations forces would secure key intersections and bridges ahead of the advance while drones, electronic warfare assets, and artillery would suppress Lithuanian resistance.
The operation relied on speed, surprise, and the assumption that NATO decision-makers would require more time to react than Russian forces needed to achieve their objectives.
 
The Drone-Centric Battlefield
One of the most important insights from the simulation was how dramatically warfare has changed since the beginning of Russia's invasion of Ukraine in 2022.
The Russian concept of operations did not depend solely on armored formations.
Instead, it relied heavily on drones, precision fires, electronic warfare, and dynamic targeting.
Russian planners envisioned turning the Suwalki Corridor into a permanent "kill zone."
Hundreds of surveillance drones would provide continuous intelligence.
Strike drones would attack troop concentrations, logistics hubs, and transportation infrastructure.
Mine-laying drones would rapidly create barriers against NATO maneuver forces.
Artillery units linked to drone reconnaissance networks would engage targets within minutes of detection.
Air-defense systems would create a protective umbrella that would complicate NATO air operations.
The goal was not necessarily to occupy large areas of territory.
The goal was to deny NATO freedom of movement.
This reflects a major lesson from Ukraine: control of terrain is no longer the only measure of military success. Increasingly, the ability to exercise fire control over critical areas can achieve strategic effects without requiring large-scale occupation.
 
The Political Dimension: Why Germany Hesitated
Perhaps the most significant finding of the exercise was not military but political.
The war game was designed primarily to test decision-making.
As the crisis unfolded, Germany's political leadership struggled to respond quickly.
Faced with uncertainty, escalation risks, and concerns about provoking a wider conflict, decision-makers delayed action.
The fundamental question underlying every discussion became increasingly apparent:
Would Germany be willing to risk a direct war with Russia to defend Lithuania?
More specifically:
Would Germany risk nuclear escalation for the Baltics?
The exercise suggested that the answer was far from clear.
For Moscow, ambiguity itself represents an opportunity.
Deterrence works only when an adversary believes political leaders possess both the capability and the willingness to act.
In the simulation, Russia successfully exploited doubts about Europe's willingness to accept the costs of military confrontation.
 
Keeping America Out of the Fight
A central objective of the Russian strategy was to prevent immediate U.S. intervention.
The Red Team deliberately avoided actions likely to trigger an automatic American response.
This approach reflected an increasingly discussed concern within European defense circles: the possibility that future U.S. administrations may expect European allies to take primary responsibility for regional security challenges.
The first 48 hours therefore became decisive.
Without immediate American involvement, European NATO members lacked sufficient suppression-of-enemy-air-defense capabilities, precision strike capacity, and offensive airpower necessary to rapidly reverse Russian gains.
This created a narrow but potentially decisive window of opportunity.
In the war game, Russia exploited that window successfully.
 
The Nuclear Shadow
The simulation also highlighted the continuing importance of nuclear coercion in Russian strategic thinking.
Should NATO attempt a counteroffensive, the Russian side had prepared a second phase involving nuclear signaling.
This included the activation of tactical nuclear forces in Belarus, Kaliningrad, and western Russia, combined with political ultimatums demanding acceptance of the new status quo.
Notably, this phase was never required.
The political paralysis generated by the initial operation proved sufficient.
For strategic planners, this may be the most concerning conclusion of all.
The threat of escalation did not need to be implemented. Its mere possibility influenced decision-making.
 
The Fundamental Question Facing Europe
At its core, the war game was not about Lithuania.
It was not even about military operations.
It was about political will.

The exercise forced participants to confront a question that European leaders have often avoided: 

Would Europe fight for the Baltics without immediate American leadership?
Is Berlin willing, in the extreme, to endure Putin’s nuclear brinkmanship? 
Are Germans mentally ready for war?
Until that question is answered clearly, deterrence remains incomplete.
Military capabilities matter. Force posture matters. Defense spending matters.
But deterrence ultimately depends on what adversaries believe.
In the simulation, the Russian side concluded that Germany would hesitate.
That belief alone was enough to achieve victory.

The lesson for NATO, policymakers, and security leaders is stark: the next European security crisis may not be determined by who possesses the strongest military.
It may be determined by who acts first, who decides faster, and who demonstrates greater resolve under pressure.