In the post–Cold War era, the Black Sea became a grey zone for NATO—strategically secondary yet diplomatically indispensable.
The 2008 war in Georgia and the 2014 annexation of Crimea exposed the region’s fragility; Russia’s full-scale invasion of Ukraine in 2022 finally moved the Black Sea from Europe’s periphery to its geopolitical core.
Control over this maritime basin determines Europe’s energy routes, grain exports, and NATO’s capacity to sustain deterrence without engaging in direct conflict. For Washington, the region has thus transformed from a distant theatre into the frontline of credibility—the endurance of U.S. influence now depends on maintaining equilibrium in this space.
At the center of this complex and vital equation stands Turkey: the guardian of the Straits and NATO’s only member in the region with both military capability and diplomatic reach.
By maintaining a delicate balance between deterrence and dialogue, Ankara turns ambiguity into an instrument of influence.
Through this approach, Turkey has emerged as what can be described as an Anchor State—a nation capable of transforming instability into stability and uncertainty into leverage.
This multidimensional posture has allowed NATO to manage escalation in a region where even a single miscalculation could trigger a wider war. For Washington, the message is clear: whoever preserves balance in the Black Sea also safeguards the architecture of European security.
As the United States reassesses its global engagements, the region demonstrates a fundamental principle: limited engagement guided by balance, not dominance, can yield lasting stability.
In geopolitics, balance is not weakness—it is resilience.
The Foundations of the Anchor State Strategy
Turkey’s approach to the Black Sea cannot be explained by either unconditional alliance loyalty or strict neutrality. Its careful enforcement of the Montreux Convention, the diplomatic channel it has maintained between Russia and Ukraine, and its leadership in the UN Black Sea Grain Initiative all illustrate a policy of controlled ambiguity.
By exercising its rights under the Montreux Convention to close the Straits to warships while keeping commercial navigation open, Turkey provided a textbook example of measured pragmatism. In doing so, it avoided provoking Moscow and demonstrated that it does not fear uncertainty—instead, it uses uncertainty as a tool for balance.
While Washington tends to focus on eliminating risk, Ankara focuses on managing it. This difference has produced a new behavioral pattern that can be described as assertive realism—a form of engagement without entanglement.
Reminiscent of George Kennan’s restrained deterrence and Charles de Gaulle’s independent alignment, this approach redefines alliance behavior for the multipolar era. For the United States and NATO, this model is not merely theoretical but operationally essential. It allows the West to generate stability through partnership rather than permanent military buildup.
Every risk absorbed by Turkey in the Black Sea relieves Washington and Brussels of the direct burden of confrontation. In this sense, Turkey’s balancing role is crucial to prevent U.S. deterrence from turning into a threat devoid of credibility.
An Anchor State is not a buffer—it is an actor that transforms geography into strategy and implements balance as power itself. At this point, equilibrium becomes strength.
Toward a Doctrine – Strategic Equilibrium
The Anchor State approach, operating through assertive realism, ultimately produces strategic equilibrium—a state of stability born out of disciplined ambiguity. Today, the Black Sea represents the line of equilibrium for Europe’s security.
Turkey stands at the intersection of two imperatives: firmness on NATO’s eastern flank and flexibility on its southern flank. Through its control of sea lines, energy corridors, and trade routes, Turkey sustains both Europe’s economic vitality and the transatlantic influence of the United States.
While traditional Western deterrence relies on costly, permanent military buildups, Ankara demonstrates that power can also stem from institutional access and diplomatic depth —a model of adaptable deterrence.
If the Indo-Pacific is the main stage of great-power competition, the Black Sea has become the laboratory of Western credibility. This region proves that deterrence can be maintained not only through military power but also through strategic balance.
One fact must be remembered: geography endures, but the form of power is defined by how it is applied. For Washington, the Black Sea is not merely a regional file—it is a test of faith in deterrence itself. If the United States cannot maintain credibility in this region, where a committed ally already bears the burden of balance, preserving that credibility elsewhere will become far more difficult. The erosion of this belief could invite further challenges of the same kind.
Regional Dynamics and Allied Interests
The dynamics of the Black Sea are directly linked to NATO’s future.
– Energy security: Projects such as TANAP and the Southern Gas Corridor reduce Europe’s dependence on Russian gas and support the United States’ long-term energy strategy.
– Food stability: The Grain Corridor prevents disruptions in the global supply chain, averting crises in allied regions such as Africa and the Middle East.
– Maritime access: Control over ports such as Trabzon, Varna, and Constanța enables NATO to maintain a visible yet non-provocative presence.
– Escalation management: Turkey’s mediating role between Moscow and Kyiv keeps NATO at a safe distance from a direct confrontation it seeks to avoid.
In summary, Turkey serves as the linchpin connecting Europe’s material resilience, NATO’s flexibility, and Washington’s deterrence narrative. Without Ankara’s balancing function, U.S. influence in the region risks becoming visible but no longer convincing—a show of power that lacks credibility.
The NATO Dimension – Collective Balance and the Future of the Alliance
With the accession of Finland and Sweden expanding NATO’s northern flank, the balance point of the alliance has shifted southward. Turkey’s Anchor State position has now become central to NATO’s deterrence architecture.
Turkey simultaneously performs three interrelated roles:
1. Operational Anchor: securing the maritime routes that ensure energy and defense logistics for Europe.
2. Diplomatic Shock Absorber: maintaining dialogue with Moscow, Kyiv, and the Global South, where NATO’s direct reach remains limited.
3. Strategic Laboratory: demonstrating that independent diplomacy and adaptable deterrence can coexist.
This model could shape NATO’s future along three possible trajectories:
– Asymmetric Adaptation: increasing reliance on regional powers such as Turkey and Poland to form a network-based model of deterrence.
– Regional Autonomy Integration: adopting differentiated decision-making mechanisms tailored to specific geographic regions within the alliance.
– Strategic Decentralization: transitioning toward a layered system of deterrence in which local balance is maintained by anchor states, while overall integration remains coordinated by Washington.
In every scenario, the lesson is the same: NATO’s resilience in the twenty-first century must arise not from uniformity of action but from complementary balance.
Why Washington Needs Turkey
In our era, power no longer simply means capacity—it also means credibility.
Whether the United States can maintain its influence and interests in the Black Sea, and by extension in Europe, depends directly on how much allies and adversaries still believe in American power and deterrence.
Relying solely on military presence to sustain that belief would impose additional economic burdens that the U.S. cannot afford and would ultimately prove unsustainable.
To preserve this credibility, regional intermediaries are indispensable. This is precisely why Washington needs Turkey—not as a subcontractor, but as a strategic interpreter.
Turkey:
– Deters Russia without cornering it, thereby keeping escalation under control.
– Provides NATO with access while preventing direct confrontation.
– Through initiatives like grain diplomacy, demonstrates that the West is still capable of producing global order.
Each of these actions sustains the belief that American power still works.
Without them, U.S. deterrence would become visible but no longer persuasive.
In short, Turkey’s strategic autonomy preserves America’s faith in deterrence.
Ankara’s assertive realism gives power a rational form, while its diplomacy gives deterrence new meaning.
Conclusion – The Lesson for Washington and NATO
Since Russia’s invasion of Ukraine, the Black Sea is no longer Europe’s periphery—it has become its strategic center. Turkey’s Anchor State strategy has proven that disciplined ambiguity can generate stability rather than chaos.
If Washington and NATO fail to internalize this lesson, they risk losing not their strength, but their credibility. The Black Sea is no longer just a geography; it is the place where faith in deterrence itself is being tested.
Recognizing Turkey’s balancing capacity is not a concession—it is an investment in the legitimacy of the Western order. Ankara is no longer a passive responder to Western strategy; it has become one of its sustaining pillars.
Anchor States do not merely stabilize regions—they preserve belief in stability itself.
For Washington, this is the most valuable form of strategic capital: Without credible partners, power is only noise; but when joined with trusted regional allies, it becomes a melody the world still listens to—and no longer fears.
[Photo by Turkishnavyenjoyer, CC BY 4.0, via Wikimedia Commons]
Meriç Alioğlu is an independent researcher focusing on European security, transatlantic deterrence, and the Black Sea region. His work explores NATO’s evolving strategic posture and Turkey’s role as an anchor state in maintaining regional equilibrium. The views and opinions expressed in this article are those of the author.
