Multiple choice

The legal terminology of 'opinio juris' was first formulated by

  1. George Scelle

  2. Schwarzenberger

  3. Francois Geny

  4. Quincy Wright
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C Correct answer
Explanation

Opinio juris sive necessitatis (the belief that a practice is legally obligatory) is a required element of customary international law. French legal scholar Francois Geny (1861-1959) contributed significantly to international legal theory and is credited with formulating the concept of opinio juris in the context of identifying customary international law.

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