; or (B) an amount that otherwise meets the best efforts of Israel, as mutually agreed to by the United States and Israel. (c) Lead agency The Secretary of Defense shall designate an appropriate research and development entity of a military department as the lead agency of the Department of Defense in carrying out this section. (d) Semiannual report The Secretary of Defense shall submit a semiannual report to the appropriate congressional committees that includes the most recent semiannual report provided by the Government of Israel to the Department of Defense pursuant to subsection (a)(2)(B)(iii). 206. Contingency plans to provide Israel with necessary defense articles and services (a) In general The President, acting through the Secretary of Defense and in consultation with the Secretary of State, shall establish and update, as appropriate, contingency plans to provide Israel with defense articles and services that are determined by the Secretary of Defense to be necessary for the defense of Israel. (b) Congressional briefing Not later than 1 year after the date of the enactment of this Act, and annually thereafter, the Secretary of Defense, in consultation with the Secretary of State, shall brief the appropriate congressional committees regarding the status of the contingency plans required under subsection (a).