How does a State deposit its instrument of ratification?

A State deposits by hand or by mail its instrument of ratification with the UN Secretary-General who is the Depositary of the Treaty. The instrument of ratification is a document, which must be signed by an appropriate official of the respective national government, for example the Head of State, Head of Government, the Minister of Foreign Affairs or an official with full powers to sign the instrument. It is the responsibility of the Secretary-General to promptly inform all Signatory States of the ratification.  

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