; or (2) congressional authorization is required under section 4(b) but has not been obtained before the expiration of the time period specified in paragraph (1) or (2) of section 4(c), as the case may be. (b) For such time as may be necessary, not to exceed six months after the expiration of a specific statutory authorization for the use of United States forces, military force may be used for defensive purposes only as necessary to end the deployment or engagement of United States forces pursuant to this joint resolution. (c) The prohibition on the obligation and expenditure of funds for activities under subsection (a) shall not apply with respect to funds for personnel pay, benefits, or honors. . 109. Law of Armed Conflict, international humanitarian law, and the treaty obligations of the United States The War Powers Resolution ( 50 U.S.C. 1541 et seq. ), as amended by this Act, is further amended by inserting after section 8 the following: 9. Law of Armed Conflict, International Humanitarian Law, and the Treaty Obligations of the United States United States forces may not be introduced into hostilities or into situations where there is a serious risk of hostilities in a manner inconsistent with the Law of Armed Conflict, international humanitarian law, or the treaty obligations of the United States. . 110. Definitions (a) In general The War Powers Resolution ( 50 U.S.C. 1541 et seq. ), as amended by this Act, is further amended by inserting after section 9 the following: 10. Definitions In this joint resolution: (1) The term appropriate congressional committees and leadership means— (A) in the House of Representatives— (i) the Committee on Foreign Affairs, the Committee on Armed Services, the Permanent Select Committee on Intelligence, and the Committee on Appropriations; and (ii) the Speaker, the majority leader, and the minority leader; and (B) in the Senate— (i) the Committee on Foreign Relations, the Committee on Armed Services, the Select Committee on Intelligence, and the Committee on Appropriations