Practice question
What does opinio juris refer to in the customary-law inquiry?
- The private preference of any judge
- A habit necessarily lacking legal significance
- Every act of courtesy regardless of legal belief
- Acceptance of the relevant practice as a legal right or obligation
- The popularity of a diplomatic reception
Legal references
- Statute of the International Court of Justice, Article 38(1)(b): https://legal.un.org/avl/pdf/ha/sicj/icj_statute_e.pdf
- International Law Commission, Conclusions on identification of customary international law (2018), Conclusions 2–12 and 15: https://legal.un.org/ilc/texts/instruments/english/draft_articles/1_13_2018.pdf
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