Diagram B

CUSTOM

Differences from treaties

		Opinio
		Juris

The role of usus and opinio in international humanitarian law

Birth of a custom

a) Necessitatis, b) Elements of custom, c) Usus, d) The present role of a custom,

e) Objection by States to the formation of a customary rule

IX. Working in pairs make up one more diagram covering such parts of the text as “Codification” or “Jus Cogens. Other Law-Creating processes.”

Phrases, which might be used in preparing the topic:

From the beginning of

It should be noted

By the same token

In the case of (custom, treaties)

By contrast

In other words

What is very novel is…

Not for… but rather… for

As we shall see now