Either of the Contracting Parties may at any time notify the other of its intention to terminate the present Agreement. A copy of the notice shall be sent simultaneously to the International Civil Aviation Organization formed by the Convention. If such notice is given, the present Agreement shall terminate one year after the date of receipt by the other Contracting Party of the notice to terminate, unless by agreement between the Contracting Parties the notice under reference is withdrawn before the expiration of that period. If the other Contracting Party fails to acknowledge receipt, notice shall be deemed to have been received fourteen days after receipt by the International Civil Aviation Organization of its copy.