The Black Sea is no longer simply a quiet body of water separating Russia, Ukraine, and NATO’s eastern flank. Since Russia launched its full-scale invasion of Ukraine on Feb. 24, 2022, this vital maritime basin has fundamentally transformed into one of Europe’s most consequential and volatile security arenas. Today, military power, commercial shipping, energy security, vital food supplies, maritime law, and emerging technologies converge in the Black Sea, turning a regional sea into a focal point of geopolitical competition.
For Türkiye, this strategic transformation carries profound significance. Controlling the Turkish Straits, bound by the legal architecture of the Montreux Convention, maintaining full membership in NATO, and concurrently preserving working diplomatic relations with both Moscow and Kyiv, Ankara occupies a singular geopolitical position. Few nations in the international system possess this rare combination of geography, legal authority, and diplomatic access. Consequently, this dynamic gives Türkiye far more than just a vested national stake in the Black Sea; it endows Ankara with both a unique opportunity and a heavy responsibility to help shape the regional security order that will eventually emerge from the war.
New Security Environment
The most profound change in the Black Sea basin may be the complete transformation of modern maritime warfare itself. Ukraine has systematically demonstrated that a belligerent state does not need a traditional, capital-ship blue-water navy to successfully challenge and deter a much stronger naval force. By leveraging an innovative combination of unmanned surface vessels, long-range cruise and ballistic missiles, aerial drones, and satellite-enabled reconnaissance, Kyiv has fundamentally disrupted traditional naval power dynamics.
The Black Sea has effectively become a live-fire testing ground for an entirely new model of warfare. In this evolving paradigm, relatively inexpensive, mass-produced unmanned systems can effectively threaten heavily armed warships, well-defended naval ports, and commercial vessels alike. Furthermore, the reported 2025 attacks on the commercial tankers Kairos and Virat highlighted an entirely different dimension of the regional threat matrix. Their reported association with Russia’s covert "shadow fleet" and their operational presence within Türkiye’s exclusive economic zone brought the direct consequences of the ongoing war dangerously close to Turkish territorial waters.
The broader strategic lesson for naval planners is clear: maritime security can no longer be understood simply in terms of traditional warships, fleet tonnage, and territorial waters. Modern maritime security must comprehensively encompass unmanned systems, advanced maritime surveillance networks, protected commercial shipping lanes, and vulnerable critical underwater infrastructure.
Türkiye has responded to this precarious environment with a careful, calibrated balancing policy. Ankara has consistently supported Ukraine’s sovereignty and internationally recognized territorial integrity while simultaneously maintaining open diplomatic and economic channels with Russia. By supporting Kyiv without formally becoming a direct party to the conflict and preserving direct communication lines with Moscow, Türkiye has secured diplomatic leverage that very few other international actors possess. However, Ankara’s role should ultimately extend far beyond managing a difficult geopolitical balance. Türkiye is uniquely equipped to use its pivotal position to promote practical, rules-based mechanisms that make the Black Sea safer, more transparent, and far more predictable for all littoral states.
At the very center of this strategic approach is the enduring Montreux Convention. Signed in 1936, the convention rigorously regulates maritime passage through the Turkish Straits and places critical restrictions on the transit of warships during times of war. Its irreplaceable strategic importance has become glaringly obvious since Russia’s invasion began. Türkiye’s strict and impartial implementation of the Montreux Convention has effectively limited the ability of the warring parties to reinforce their naval presence in the theater, while simultaneously restricting non-Black Sea powers from introducing unlimited naval forces into the semi-enclosed sea.
The convention consequently remains the bedrock pillar of Black Sea stability. Its 90th anniversary in 2026 served as a timely reminder of its enduring legal and strategic importance. Türkiye’s primary objective should never be to replace or weaken Montreux, but rather to build upon the stability it has historically provided. Any emerging maritime security arrangements in the post-war era must reinforce, rather than undermine, this critical existing legal framework.
The war has permanently altered the very definition of modern naval power. Unmanned surface and underwater vehicles, precision-guided munitions, sophisticated electronic warfare suites, and advanced intelligence-gathering surveillance are actively challenging traditional metrics of fleet strength. A modern navy’s true combat effectiveness can no longer be judged simply by counting the number of frigates, submarines, or corvettes it flies its flag on. The operational ability to rapidly detect emerging threats, process vast streams of battlefield information, deploy unmanned platforms, and strike with absolute precision is rapidly becoming just as critical.
Türkiye’s ambitious domestic naval modernization programs—including the MILGEM corvette project, Reis-class submarines, the MILDEN national submarine development project, the TF-2000 air-defense destroyer initiative, and the MUGEM aircraft carrier concept—must therefore be viewed within this wider technological transformation. Future naval power will increasingly rely on integrated, networked architectures combining manned and unmanned systems. For Türkiye, mastering this transition is both an urgent national defense requirement and a major strategic industrial opportunity.
Beyond the Battlefield
The ongoing conflict has also brutally exposed another critical vulnerability across the region: the extreme fragility of underwater infrastructure. Submarine fiber-optic communication cables, critical energy pipelines, offshore facilities, and other vital economic assets are absolutely essential to modern national economies, yet they remain exceptionally difficult to continuously monitor and physically protect.
The Black Sea Mine Countermeasures Task Group, jointly established by Türkiye, Romania, and Bulgaria, provides an exemplary model of practical regional cooperation. Its formal activation under Turkish naval command demonstrated that pragmatic security cooperation remains entirely possible even in the face of severe geopolitical tensions and active wartime hazards. Such vital cooperation should not remain siloed; it could be significantly expanded beyond routine mine clearance operations to include comprehensive maritime domain awareness, the collective protection of underwater infrastructure, coordinated search and rescue operations, and dedicated crisis communication channels.
The strategic importance of the Black Sea extends far beyond purely military affairs. The historic Black Sea Grain Initiative vividly demonstrated how directly regional security affects global food markets and international price stability. Before the multilateral arrangement ultimately expired in July 2023, approximately 33 million tons of critical agricultural products successfully reached international markets, staving off hunger in developing nations. More recent military strikes on port infrastructure around Novorossiysk have once again illustrated the severe vulnerability of commercial supply chains. Physical damage to major export terminals can drastically reduce shipping capacity even when active fighting takes place far away from the consumer markets ultimately affected.
For Türkiye, securing the Black Sea therefore means protecting not only grey-hull naval vessels, but also safeguarding the vital commercial routes and maritime infrastructure that connect regional agricultural and energy producers to global markets. This points directly to the urgent need for a durable, comprehensive maritime security framework covering commercial navigation, systematic mine clearance, the regulation of unmanned systems, the defense of underwater infrastructure, critical energy transit routes, and institutionalized crisis prevention. Such a cooperative framework does not need to evolve into a new, provocative military alliance. Instead, it could be built upon pragmatic, functional cooperation among the Black Sea littoral states, firmly supported by international law and explicitly designed to reduce the risk of accidental escalation.
Shaping the Post-War Black Sea
The profound security consequences of the current war will inevitably persist long after the fighting eventually ceases. Thousands of sea mines will have to be painstakingly cleared from shipping lanes. Unmanned weapons and autonomous systems will permanently remain a core part of the military equation. Underwater infrastructure will require constant, high-tech protection. Traditional naval balances will have fundamentally shifted, and commercial navigation will demand reliable, institutionalized security arrangements. The fundamental question facing the region is therefore not simply who ultimately wins the war on the battlefield, but rather what kind of Black Sea security environment emerges in its aftermath.
A permanently militarized, highly polarized, and divided Black Sea would create severe, long-term strategic risks for Türkiye. Conversely, a more predictable, cooperative maritime environment, supported by regional dialogue and international law, would far better protect Türkiye’s vital national security and economic interests.
Türkiye is uniquely positioned to heavily influence which of these futures ultimately emerges. Its irreplaceable geography cannot be replicated by any other state. Its legal authority under the Montreux Convention cannot easily be substituted. Its longstanding NATO membership provides deep access to a wider Western security network, while its constructive working relations with both Moscow and Kyiv provide diplomatic channels unavailable to almost any other international actor. These structural advantages should form the solid foundation of a comprehensive, forward-looking Black Sea strategy.
The overarching objective should not be to unilaterally dominate the region. Rather, it should be to help shape a stable security environment where Türkiye’s core national interests—territorial security, absolute freedom of navigation, uninterrupted energy security, vibrant commercial trade, and enduring regional stability—are fully protected.
The Black Sea has already entered a perilous new era. The war has profoundly altered the regional balance of power, radically transformed naval warfare, and brutally exposed the inherent vulnerability of commercial and underwater infrastructure. The next critical stage will determine whether these sweeping changes produce permanent instability and perpetual crisis, or pave the way toward a stable new regional security order. Türkiye cannot afford to remain a passive observer to these historic developments.
The Black Sea is directly and inextricably connected to Türkiye’s national security, economic prosperity, and long-term foreign policy. Ankara therefore holds both the unique opportunity and the heavy responsibility to help define the rules of the next Black Sea era. The war may eventually end through diplomacy or exhaustion, but the strategic struggle over the future architecture of the Black Sea has already begun, and Türkiye is uniquely positioned to shape its final outcomes.
The views and opinions expressed in this article are solely those of the author. They do not necessarily reflect the editorial stance, values, or position of the publication, which provides space for diverse perspectives as part of its commitment to open and informed public discussion.