An Analysis on the Principle of Jus Cogens in Treaty Law
Introduction
The development and recognition of international law has been a gradual process. International law has been described as "one of the possible sets of laws for ordering the world," based "on the wills of all or many nations." The principle of jus cogens emerged under the influence of natural law concepts. Jus cogens literally means "compelling law." These norms are peremptory in nature, rendering any rules that contradict them void. Consequently, jus cogens norms have taken on the nature of international constitutional rules for two main reasons: they limit the ability of states to create or change laws and prevent states from violating these norms, as doing so could undermine the international legal system.
Treaties Violating Jus Cogens: Void or Invalid?
The International Law Commission (ILC), after extensive discussion, concluded that any treaty conflicting with a jus cogens norm would be void from the outset. This consensus was reached during the 1969 Vienna Conference and was codified in Articles 53 and 64 of the Vienna Convention on the Law of Treaties. These articles establish that a treaty is or becomes void if it conflicts with an existing or emerging peremptory norm. However, voiding a treaty years after it was enacted can impact many actions and agreements made under it.
Therefore, the ILC emphasized that while a treaty founded on valid grounds might be terminated, it should not be deemed void. Legal obligations and rights conflicting with the new norm cannot be sustained. Article 71 of the Vienna Convention outlines the consequences for a conflicting treaty:
- In the case of a treaty void under Article 53, the parties shall: (a) eliminate, as far as possible, the consequences of any act performed in reliance on a provision conflicting with the jus cogens norm; (b) align their mutual relations with the jus cogens norm.
- In the case of a treaty becoming void under Article 64, its termination: (a) releases the parties from any obligation to further perform the treaty; (b) does not affect any right, obligation, or legal situation created through the treaty before its termination, provided those rights, obligations, or situations are not in conflict with the new jus cogens norm.
The first article nullifies a treaty conflicting with pre-existing jus cogens norms, while the second nullifies a treaty conflicting with emerging ones. In the latter case, the recognition of a new jus cogens norm does not render the treaty void, meaning the emerging norm does not have a retrospective effect, and the treaty remains valid until its obligations are reassessed.
Uncertainties of Jus Cogens
Jus cogens norms are considered superior to other international law norms. However, they impose several limitations on states' ability to change or introduce new norms. States must adhere to jus cogens rules regardless of their opinions or consent, as these rules are deemed crucial for the international community.
The problem arises when considering the enforceability of jus cogens; international laws and decisions are largely advisory and not enforceable as national laws. As a result, many states have not implemented noticeable provisions for enforcing jus cogens, raising questions about the necessity and effectiveness of these norms.
Additionally, there are challenges in determining which rules should be covered under jus cogens, with concerns that the norm could be misused in interpreting applicable rules.
Conclusion
Jus cogens norms have existed since 1969, with the goal of establishing justice and peace among nations. However, the issue with jus cogens is that it is often treated as the law itself rather than a standard for evaluating law. This can lead to confusion and situations where these norms, if applied rigidly, might cause more harm than good. The methods most often suggested for determining the content of jus cogens lack both the authority and capability to perform this task effectively.
