Why NATO Is Reluctant to Expel Turkey: A Strategic and Legal Analysis
NATO, the North Atlantic Treaty Organization, stands as one of the most powerful military alliances in modern history. Formed in the aftermath of World War II to provide collective security against the Soviet Union, it is rooted in shared democratic values and a mutual commitment to peace and stability. Over time, however, the alliance has faced significant internal tensions, especially in recent years with one of its most strategically important yet controversial members: Turkey.
Turkey’s increasingly assertive foreign policy, internal democratic backsliding, and disputes with fellow NATO members have raised serious questions. Critics often ask: Why has NATO not expelled Turkey? The answer lies in a complex interplay of legal limitations, strategic necessity, and geopolitical pragmatism.
No Mechanism for Expulsion
One of the most fundamental reasons NATO has not expelled Turkey is procedural: the NATO treaty does not contain any provision for expelling a member state. Article 13 of the North Atlantic Treaty only provides a path for voluntary withdrawal, allowing any member to leave the alliance after submitting a formal notice. There is no mechanism that allows the alliance to forcibly remove a country, regardless of how disruptive or divergent that country’s behavior becomes.
This absence is no accident. NATO was designed during the Cold War with unity and mutual trust in mind. It was presumed that all members would share a baseline commitment to democracy and collective security. As such, the idea of expelling a member seemed both unnecessary and potentially dangerous, threatening to fracture the alliance from within.
Some international law scholars have argued that under broader international legal principles, a country could be removed if it is found in material breach of the treaty’s foundational values — such as democracy, the rule of law, and respect for human rights. However, pursuing such a path would be unprecedented, fraught with legal ambiguities, and politically explosive. It would require unanimous consent from all other NATO members, which is highly unlikely, especially given the varying political alignments and interests within the alliance.
Strategic Importance of Turkey
Even if the legal barriers could be overcome, NATO is also restrained by powerful strategic considerations. Turkey’s geographic location is arguably its greatest asset to the alliance. Sitting at the crossroads of Europe and Asia, it controls the Bosporus Strait — the gateway to the Black Sea — and serves as a critical bridge between the West and the turbulent Middle East.
This position gives Turkey enormous leverage. NATO relies on Turkey for access to key regions, particularly in managing conflicts in Syria, Iraq, and the broader Middle East. The Incirlik Air Base in southern Turkey, for instance, has been a crucial hub for U.S. and NATO operations in the region.
Furthermore, Turkey hosts part of NATO’s missile defense shield, which is designed to intercept potential threats from the Middle East. Losing Turkey would not only weaken NATO’s eastern flank but also give Russia and other rivals greater influence in the region.
Fear of Strategic Realignment
Another major concern is what Turkey might do if it were expelled or pushed out of NATO. There are growing signs of Ankara tilting toward alternative alliances. Its purchase of the Russian-made S-400 missile defense system, despite warnings from NATO and the United States, is a case in point. This deal marked a significant departure from NATO interoperability and raised alarms about intelligence sharing and defense coordination.
If NATO were to sever ties with Turkey, it could push the country further into the orbit of powers like Russia, China, or Iran — all of whom would benefit from undermining NATO’s cohesion. In effect, NATO might lose a difficult ally only to gain a powerful adversary in a strategically crucial region.
Moreover, Turkey remains a significant military power. It possesses NATO’s second-largest standing army and has shown a willingness to act independently to project its influence — whether in Libya, Syria, the Eastern Mediterranean, or the South Caucasus. Such a country turning hostile could pose substantial challenges to the alliance.
Diplomatic Balancing Act
Despite tensions, NATO has repeatedly chosen to manage its disagreements with Turkey through diplomatic engagement rather than confrontation. The alliance recognizes that unity, however imperfect, is preferable to the destabilizing consequences of exclusion.
Turkey, for its part, continues to leverage its NATO membership to assert its interests, sometimes using its veto power to block decisions or influence policy — as seen in its delayed approval of Sweden’s accession to the alliance.
There is no question that Turkey’s role in NATO is complicated. It is a valuable yet unpredictable partner, one that frequently tests the limits of alliance solidarity. But expelling it — even if legally possible — would open a Pandora’s box of legal, strategic, and diplomatic challenges.
NATO’s reluctance to expel Turkey is not about weakness or indecision; it is about managing the competing priorities of alliance cohesion, legal structure, and geopolitical necessity. While Turkey may not always align with the democratic ideals NATO espouses, its strategic value is too significant to overlook.
The alliance continues to walk a delicate tightrope — upholding its principles while navigating the realities of a shifting global power structure. Until a dramatic shift occurs, NATO is likely to maintain its approach: engagement over expulsion, pressure over isolation, and dialogue over division.
If you’re interested in exploring this issue further, the WION Gravitas segment titled “Why is NATO shy of expelling Turkey?” provides a compelling video discussion on the subject, available on YouTube.
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