ARTICLE 21 ARTICLE 27 The Pa,·ties to the present Convention shall com- Each Party to the present Convention undertakes municate to the Secretary-General of the United to adopt, in accordance with its Col16titution, the Nations such laws and regulations as have already le~ islati vc or other measures necessary to ensure the been promulgated in their States, and thereafter application of the Convention. annually such laws and regulations as may be promulgated, relating to the subjects of the present Con- ARTICLE 28 vention, as well as all measures taken bv them concerning the application of the Conventi(;n. The The prov1s1ons of the present Convention shall information received shall be published periodically supersede in the relations between the Parties thereto the provisions of the international instruments reby the Secretary-General an<l sent to all Members ferred to in sub-paragraphs 1, 2, 3 and 4 of the of the United Nations ancl to non-member States to second paragraph of the Preamble, each of which which the present Conyention is officially communishall be deemed to be termin:ited when all the Parties cated in accordance with article 23.