A unilateral statement made by a state when signing, ratifying, or acceding to a treaty, which purports to exclude or modify the legal effect of certain provisions of the treaty in their application to that state.
Written communication by a state, upon consenting to be bound by a treaty, intended to modify certain provisions of the treaty in their application to that state. Must be compatible with the object and purpose of the treaty. May be withdrawn.
The power of the governor general to withhold the royal assent from a bill that has been passed by both Houses of Parliament.