Art 38, Statue of the International Court of Justice
“international conventions”
“international custom”
“the general principles of law”
“judicial decisions and the teachings of the most highly qualified publicists”
=> + UN convention on the law of the sea
Conclusion 16, draft conclusions on identification of customary international law
“to determine the existence and content of a rule of customary international law, it is necessary to ascertain whether there is a general practice that is accepted as law”
Art 2, Vienna Convention
Definition of treaty
- international agreement
- between states
- written form
- under International Law