; and (B) Iran has ceased providing support for acts of international terrorism; or (2) terminating the provisions of this section is vital to the national security interests of the United States, with an explanation of the reasons therefor. (f) Definitions For purposes of this section: (1) Appropriate congressional committees The term appropriate congressional committees means the committees on Financial Services and Foreign Affairs of the House of Representatives and the committees on Banking, Housing, and Urban Affairs and Foreign Relations of the Senate. (2) Financial institution The term financial institution means a United States financial institution or a foreign financial institution. (3) Foreign financial institution The term foreign financial institution has the meaning given that term under section 561.308 of title 31, Code of Federal Regulations. (4) Knowingly The term knowingly with respect to conduct, a circumstance, or a result, means that a person has actual knowledge, or should have known, of the conduct, the circumstance, or the result. (5) Secretary The term Secretary means the Secretary of the Treasury. (6) United States financial institution The term United States financial institution has the meaning given the term U.S. financial institution under section 561.309 of title 31, Code of Federal Regulations.