Article 15

This Agreement shall be concluded for an initial period of five years from the date of its entry into force. Unless one of the Parties denounces it by giving notice to that effect six months before the date of expiry of the five-year period, it shall remain in force for further periods of two years unless denounced by notice given at least three months before the date of expiry of each such two-year period.

At the end of the five-year period, and thereafter at the end of each two-year period, and at the end of the duration of the Protocol, the Contracting Parties shall enter into negotiations to determine by common agreement what amendments or additions to the Annex or Protocol are required. In the event of a Contracting Party giving notice denouncing the Agreement, the Contracting Parties shall enter into negotiations.