Vienna Convention on the Law of Treaties (VCLT)
Exam Snapshot
The Vienna Convention on the Law of Treaties (1969) is the "treaty on treaties," codifying customary international law regarding the lifecycle of treaties from formation to termination.
Core Concept
- Formation: The process typically involves negotiation, adoption (consensus), and authentication (text becomes definitive). Consent to be bound is expressed through signature, exchange of instruments, ratification, or accession.
- Reservations: A unilateral statement made by a State when signing/ratifying, intending to exclude or modify the legal effect of certain provisions. Reservations are permitted unless prohibited by the treaty or incompatible with the treaty’s object and purpose.
- Termination: Occurs through mutual consent, material breach by one party (justifying suspension/termination by others), supervening impossibility of performance, or a fundamental change of circumstances (rebus sic stantibus).
Nepal Law Anchors
- Treaty Act, 2047: Governs the procedure for the conclusion and implementation of treaties in Nepal.
- Constitution of Nepal, 2015, Article 279: Mandates Federal Parliament ratification for treaties concerning peace/friendship, security/strategic alliance, boundaries, and natural resources.
Confusable Terms
| Term | Meaning |
|---|---|
| Ratification | Formal confirmation of a treaty that a state has already signed. |
| Accession | Joining a treaty already in force without having signed it first. |
MCQ Traps
- Treaty Ratification: Do not assume all treaties require parliamentary ratification. Under international law, some enter into force upon signature alone.
- Reservations: Reservations cannot be used to undermine the core object and purpose of the treaty.
- Fundamental Change: Invoking rebus sic stantibus requires a radical, unforeseen change; it is not a blanket excuse to exit unwanted treaties.
Example
If State A and State B sign a treaty regarding the joint use of a river, but the river dries up completely due to natural causes, State A may invoke the "impossibility of performance" (Article 61 of VCLT) to terminate the treaty.
Memory Hook
F.A.R.T.: Formation, Adoption, Ratification/Accession, Termination.
Quick Revision
- VCLT applies only to written treaties between States.
- Pacta sunt servanda: Treaties must be performed in good faith.
- Article 279 of Nepal's Constitution governs specific parliamentary approval requirements.
- Reservations must be compatible with the treaty's object.
- Termination requires clear, recognized grounds like material breach or fundamental change of circumstances.