A protocol is always linked to an existing convention but is a separate and additional agreement that must be signed and ratified by the “signatory” parties to the convention. Protocols strengthen a convention, usually by adding new and more detailed commitments.
Ratification
After signing an international treaty, such as the Climate Change Convention or the Kyoto Protocol, a country has to ratify the commitment, often with the approval of its parliament or other legislature. The ratification instrument must be deposited with the UN...