; and (iii) a description of likely risks and impediments to the successful implementation of the strategy. (C) Termination The requirement to submit a report under this paragraph shall terminate on the earlier of the following dates: (i) March 15, 2029. (ii) The date on which a comprehensive integrated air and missile defense architecture for the area of responsibility of United States Indo-Pacific Command has achieved initial operational capability, as determined jointly by the Commander of United States Indo-Pacific Command and the Director of the Missile Defense Agency. (3) Limitation Of the funds authorized to be appropriated by this Act for fiscal year 2024 for Operation and Maintenance, Defense-wide, and available for the Office of the Under Secretary of Defense for Policy, not more than 90 percent may be obligated or expended until the date on which both of the following reports are submitted to the congressional defense committees: (A) The report on initial findings required by paragraph (1). (B) The first annual report required by paragraph (2)(A). 1670. Report on potential enhancements to integrated air and missile defense capabilities in Europe (a) In general Not later than 240 days after the date of the enactment of this Act, the Secretary of Defense, in consultation with the officials specified in subsection (c), shall submit to the congressional defense committees a report on potential enhancements to U.S. and allied air and missile defense capabilities that could contribute to the integrated air and missile defense capability of the North Atlantic Treaty Organization (NATO). (b) Elements The report required by subsection (a) shall include— (1) identification of potential enhancements to U.S. and allied air and missile defense capabilities as described in such subsection taking into account a 360-degree approach tailored to address threats to NATO member nations emanating from all strategic directions