تعريف opinio juris sive necessitatis في الإنجليزية الإنجليزية القاموس.
The principle of International Law where states believe or accept that a practice exists and must be followed because of a rule of Law requiring it, to the extent that it becomes part of the body of norms known as international Customary Law. See the Lotus Case
opinio juris sive necessitatis
علم أصول الكلمات
() Latin, opinio iuris sive necessitatis, "opinion of law but of necessity"