; and receiving commitments from such elements to promote respect for human rights and the rule of law: Provided further , That the Secretary of Defense shall, not fewer than 15 days prior to obligating from this appropriation account, notify the congressional defense committees in writing of the details of any such obligation: Provided further , That the Secretary of Defense may accept and retain contributions, including assistance in-kind, from foreign governments, including the Government of Iraq and other entities, to carry out assistance authorized under this heading: Provided further , That contributions of funds for the purposes provided herein from any foreign government or other entity may be credited to this Fund, to remain available until expended, and used for such purposes: Provided further , That the Secretary of Defense may waive a provision of law relating to the acquisition of items and support services or sections 40 and 40A of the Arms Export Control Act ( 22 U.S.C. 2780 and 2785) if the Secretary determines that such provision of law would prohibit, restrict, delay or otherwise limit the provision of such assistance and a notice of and justification for such waiver is submitted to the congressional defense committees, the Committees on Appropriations and Foreign Relations of the Senate and the Committees on Appropriations and Foreign Affairs of the House of Representatives: Provided further , That the United States may accept equipment procured using funds provided under this heading, or under the heading, Iraq Train and Equip Fund in prior Acts, that was transferred to security forces, irregular forces, or groups participating, or preparing to participate in activities to counter the Islamic State of Iraq and the Levant and returned by such forces or groups to the United States, may be treated as stocks of the Department of Defense upon written notification to the congressional defense committees: Provided further , That equipment procured using funds provided under this heading, or under the