Artikel 17

1. This Agreement is concluded for an indefinite period of time. Each Party shall notify the other Party through diplomatic channels once the national measures necessary for entry into force of this Agreement have been completed. This Agreement shall enter into force on the first day of the second month following the receipt of the later notification.
2. This Agreement may be amended with the mutual consent of the Parties. Either Party may propose amendments to this Agreement at any time. Such amendments shall enter into force under the conditions laid down in paragraph 1 of this Article, with the exception of an amendment of the Annex, which amendment shall enter into force on a date to be agreed upon by the Parties.
3. A Party may terminate this Agreement in writing at any time. In this case, the Agreement shall expire six months after receipt of the notification.
4. Regardless of the termination of this Agreement, all Classified Information released or generated under this Agreement shall be protected in accordance with this Agreement for as long as it remains classified.