As used in this section-
(a) “Cooperative project” means a jointly managed arrangement-
(1) Described in a written agreement between the parties;
(2) Undertaken to further the objectives of standardization, rationalization, and interoperability of the armed forces of NATO member countries; and
(3) Providing for-
(i) One or more of the other participants to share with the United States the cost of research and development, testing, evaluation, or joint production (including follow-on support) of certain defense articles;
(ii) Concurrent production in the United States and in another member country of a defense article jointly developed; or
(iii) Acquisition by the United States of a defense article or defense service from another member country.
(b) “Other participant” means a cooperative project participant other than the United States.