Artikel 20

1. This Agreement shall enter into force on the first day of the second month after the date on which the Kingdom of the Netherlands notifies the Government of the United States of America that the applicable constitutional requirements have been fulfilled.
2. Pending such entry into force, the terms of this Agreement shall be applied provisionally upon signature by both Parties.
3. As far as the Kingdom of the Netherlands is concerned this Agreement shall apply to the European part of the Netherlands.
4. This Agreement shall remain in force until terminated in writing by either Party, with such termination taking effect six months from the date of written notice of termination. This Agreement may also be terminated at any time by the mutual written agreement of the Parties.
5. Unless otherwise agreed, termination of this Agreement shall not affect the validity or duration of any Cooperative Activity not fully completed at the time of termination.
6. The respective rights and responsibilities of the Parties and Participants under Articles 11 (Information Security), 12 (Intellectual Property Management and Use of Information), 13 (Publication of Research Results), 16 (Third Party Sales and Transfers), and Annex I shall continue notwithstanding the termination of this Agreement. In particular, all Classified Information exchanged or generated under this Agreement shall continue to be protected in the event of the termination of the Agreement.