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Bu yazımızda “Clasula Rebus Sic Stantibus” ilkesi üzerinden Sözleşme Hukuku ve Uluslararası Hukuk alanında faydalanabileceğiniz, Hukuk İngilizcesi bakımından zengin ve metin üslubu olarak Sokratik Metod ile oluşturduğumuz bir diyalog okuma metni sizleri bekliyor.

Keyifli çalışmalar dileriz …


Socrates: Good day! I understand you are interested in learning about legal doctrines, particularly those related to international law. Today, let us discuss a concept called clausula rebus sic stantibus. Have you heard of this term before?

Student: I’ve come across the term, but I’m not entirely sure what it means. It sounds Latin, and I know it’s used in legal contexts, but could you explain it further?

Socrates: You’re correct; it is Latin, and it translates to “things thus standing” or more idiomatically, “as things stand.” Now, tell me, when two parties enter into a contract or a treaty, what do you think is the general expectation about the obligations they are committing to?

Student: Well, the general expectation is that both parties will fulfill their obligations as agreed upon, regardless of what happens in the future.

Socrates: Exactly. This principle is known as pacta sunt servanda, which means “promises must be kept.” But let me ask you this: What if the circumstances that existed at the time of the agreement change fundamentally? Should the parties still be bound by the original terms?

Student: That’s an interesting question. If the circumstances change drastically, it might be unfair to hold the parties to the original terms. But wouldn’t that create uncertainty in contracts and treaties?

Socrates: You’ve touched on the central tension. On one hand, certainty and the binding nature of agreements are crucial for legal stability. On the other hand, unforeseen and fundamental changes in circumstances can make strict adherence to the original terms unreasonable. This is where clausula rebus sic stantibus comes into play. It allows a contract or treaty to become inapplicable if the circumstances have fundamentally changed. Now, do you think this doctrine could be applied freely without any restrictions?

Student: I suppose it would need to be applied carefully; otherwise, parties might use it as an excuse to get out of their commitments whenever it suits them.

Socrates: Precisely. The scope of this doctrine is not without limits, as it indeed poses a risk to the security of treaties and agreements. The conditions under which it can be invoked must be very specific. For instance, in international law, it is recognized under the 1969 Vienna Convention on the Law of Treaties. Are you familiar with this Convention?

Student: I’ve heard of it. It’s a treaty that governs treaties, right?

Socrates: Correct. Article 62 of the Vienna Convention specifically addresses clausula rebus sic stantibus. It provides the only justifications for invoking this doctrine. Can you think of what might be essential for a change in circumstances to justify altering or terminating a treaty?

Student: Perhaps the circumstances at the time of the treaty’s conclusion were vital to the obligations? And if those circumstances change drastically, the treaty might no longer be fair or reasonable.

Socrates: That’s exactly right. Article 62 outlines two key conditions: First, the circumstances that existed at the time of the treaty’s conclusion must have been objectively essential to the obligations of the treaty. Second, the change in circumstances must have a radical effect on the obligations under the treaty. But let’s consider this: what if the parties had already anticipated the change? Would the doctrine still apply?

Student: I don’t think it would. If the change was expected or contemplated, the parties should have made provisions for it in the treaty itself.

Socrates: You’re thinking like a lawyer! If the parties had contemplated the change, the doctrine does not apply, and the original provisions of the treaty remain in effect. This principle was clarified in a case known as the Fisheries Jurisdiction Case between the United Kingdom and Iceland in 1973. Are you familiar with this case?

Student: No, I haven’t heard of that case before. What happened?

Socrates: In this case, Iceland sought to extend its exclusive fishing zone, which led to a dispute with the United Kingdom. Iceland argued that the circumstances had fundamentally changed since the treaty was signed, thus invoking clausula rebus sic stantibus. However, the court ruled that the change in circumstances was not sufficient to justify Iceland’s actions because the possibility of such changes had been contemplated when the treaty was concluded.

Student: I see. So, even if circumstances change, it’s not always enough to invoke this doctrine. What about in private law? Does the doctrine apply there as well?

Socrates: Indeed, it does. The principle of clausula rebus sic stantibus is found in all legal systems that descend from Roman law. For example, in Swiss law, Article 119 of the Swiss Code of Obligations incorporates this principle into contract law. The idea is similar: if a fundamental change in circumstances occurs, a contract may become inapplicable.

Student: That makes sense. It seems like a useful principle, but also one that could be abused if not carefully controlled.

Socrates: That’s a fair assessment. Historically, the doctrine has been both embraced and rejected at various times. During the 19th century, civil law largely rejected the doctrine, but it remained influential in international law. A key figure in its historical development was the Swiss legal expert Emer de Vattel, who promoted the view that changes in circumstances justify changes in obligations. Are you familiar with his work?

Student: I’ve heard his name, but I don’t know much about him. What did he contribute to this doctrine?

Socrates: Vattel’s work was significant in shaping the understanding of this doctrine. He argued that when conditions change, the obligations that arose from the original situation should also change. His ideas were influential in reconciling the static nature of law with the dynamic nature of international relations. This reconciliation was crucial for the eventual inclusion of the doctrine in the Vienna Convention on the Law of Treaties. But tell me, how do you think this doctrine has been applied in real-world situations?

Student: I imagine it’s been used in situations where countries or parties want to renegotiate or withdraw from treaties due to changes they didn’t foresee.

Socrates: That’s exactly how it has been used. For example, in 1881, the United States attempted to end the Clayton–Bulwer Treaty with the United Kingdom by citing fundamentally changed circumstances. Although the doctrine didn’t apply in that case, it marked the first time the US invoked the principle. There are many other instances as well, such as Russia invoking the doctrine to change the terms of the Treaty of Paris in 1871. These examples highlight the practical application of the doctrine in international relations.

Student: It seems like a double-edged sword. On one hand, it allows for flexibility in treaties, but on the other hand, it could undermine the stability of international agreements.

Socrates: You’ve captured the essence of the dilemma perfectly. Clausula rebus sic stantibus offers a way to address unforeseen changes, but it must be invoked with caution to avoid undermining the very treaties it seeks to adjust. In conclusion, understanding this doctrine is essential for navigating both international and private law. Would you agree that it requires a balance between flexibility and stability?

Student: Absolutely. It’s a delicate balance, but it’s necessary for a fair legal system. I’ve learned a lot from this discussion. Thank you, Socrates!

Socrates: You’re most welcome. Remember, the law is a living, breathing entity, and understanding its principles, like clausula rebus sic stantibus, will help you better navigate its complexities. Until next time!


1. Doctrine – Doktrin
2. Clausula rebus sic stantibus – Koşulların Aynı Kalması Şartıyla
3. Treaty – Antlaşma
4. Contract – Sözleşme
5. Inapplicable – Uygulanamaz
6. Pacta sunt servanda – Ahde Vefa / Sözleşmelerin Bağlayıcılığı
7. Legal stability – Hukuki istikrar
8. Obligation – Yükümlülük
9. Fundamental change of circumstances – Temel koşul değişikliği
10. Unforeseen – Öngörülemeyen
11. Justification – Gerekçe
12. Invoke – Başvurmak, İleri sürmek
13. Essential – Esas, Temel
14. Radical effect – Köklü etki
15. Anticipate – Beklemek, Önceden tahmin etmek
16. Provision – Hüküm, Madde
17. Jurisdiction – Yargı yetkisi
18. Civil law – Medeni hukuk
19. Customary international law – Uluslararası teamül hukuku
20. Vienna Convention on the Law of Treaties – Viyana Antlaşmalar Hukuku Sözleşmesi
21. Article – Madde
22. Denunciation – Fesih, Reddetme
23. Unilateral – Tek taraflı
24. Permanent Court of International Justice – Daimi Uluslararası Adalet Divanı
25. Precedent – Emsal, Örnek olay
26. Termination – Fesih, Sonlandırma
27. Contemplate – Düşünmek, Tasarlamak
28. Obligation under the treaty – Antlaşma kapsamındaki yükümlülük
29. Rebus sic stantibus – Koşulların aynı kalması şartıyla
30. Fisheries Jurisdiction Case – Balıkçılık Yargı Yetkisi Davası
31. Unforeseen and fundamental changes – Öngörülemeyen ve temel değişiklikler
32. Private law – Özel hukuk
33. Article 119 of the Swiss Code of Obligations – İsviçre Borçlar Kanunu’nun 119. maddesi
34. Legal systems descending from Roman law – Roma hukukundan türeyen hukuk sistemleri
35. Obligations arising from the original situation – Orijinal durumdan kaynaklanan yükümlülükler
36. Legal expert – Hukuk uzmanı
37. Historical development – Tarihsel gelişim
38. Uncertainty – Belirsizlik
39. Legal flexibility – Hukuki esneklik
40. Renegotiate – Yeniden müzakere etmek
41. Withdraw – Çekilmek, Geri çekilmek
42. Case law – İçtihat hukuku
43. Dynamic nature of international relations – Uluslararası ilişkilerin dinamik doğası
44. Static nature of law – Hukukun statik doğası
45. Legal dilemma – Hukuki ikilem
46. Double-edged sword – İki ucu keskin kılıç
47. Insistence – Israr
48. Invocation – Çağrı, Başvuru
49. Customary rule – Teamül kuralı
50. Legal balance – Hukuki denge


  1. ______________ refers to the principle that all agreements or contracts are legally binding and must be honored. This is known in Latin as pacta sunt servanda.
  2. A ______________ change of circumstances might allow a treaty to be modified or terminated under the doctrine of clausula rebus sic stantibus.
  3. The doctrine of ______________ serves as an exception to the principle of pacta sunt servanda when there has been a significant change in circumstances.
  4. The ______________ Court of International Justice plays a role in resolving disputes involving international treaties.
  5. In civil law systems, particularly those descending from Roman law, the principle of _______________ _ allows contracts to be adapted or terminated due to changes in circumstances.
  6. The 1969 Vienna Convention on the Law of Treaties, specifically _______________ _ 62, outlines the conditions under which a treaty may become inapplicable.
  7. _______________ _ refers to the idea that law is often slow to adapt, in contrast to the dynamic nature of international relations.
  8. _______________ _ is the unilateral decision to withdraw from a treaty, which is generally prohibited under international law.
  9. A legal ______________ __ arises when there are conflicting principles or obligations within a legal context, requiring careful consideration to resolve.
  10. The ______________ __ case between the United Kingdom and Iceland clarified the conditions under which a change in circumstances might affect treaty obligations.
  11. ______________ __ international law includes rules and practices that have evolved over time and are considered binding, even if not written down in formal treaties.
  12. _______________ _ refers to the flexibility within the legal system to adapt to changing circumstances without undermining the stability of the law.
  13. The _______________ _ of a contract or treaty can lead to disputes, especially if one party believes the original conditions have fundamentally changed.
  14. The _______________ _ nature of the law can sometimes be at odds with the need for adaptation in international agreements.
  15. The _______________ _ in Switzerland is an example of a legal document that incorporates the principle of clausula rebus sic stantibus.
  1. Pacta sunt servanda
  2. Fundamental
  3. Clausula rebus sic stantibus
  4. Permanent
  5. Clausula rebus sic stantibus
  6. Article
  7. Static
  8. Denunciation
  9. Dilemma
  10. Fisheries Jurisdiction
  11. Customary
  12. Legal flexibility
  13. Termination
  14. Static
  15. Swiss Code of Obligations

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