[Notes on Article 11, contd.]
IPIC/DC/3 page 64
129. Ad paragraph (4): This paragraph establishes the requirements for the entry into force of amendments adopted by the Assembly. It provides that such amendments shall enter into force one month after written notifications of acceptance have been received from three-fourths of the Contracting Parties members of the Assembly at the time of the adoption of the amendment by the Assembly. Such amendments shall bind all Contracting Parties at the time of the adoption of the amendment by the Assembly and all States and Intergovernmental Organizations that thereafter become Contracting Parties.