any specific understanding by a country that, notwithstanding
section 2797b(b) of this title, the United States retains the right to take the actions under
section 2797b(a)(2) of this title in the case of any export or transfer of any MTCR equipment or technology that contributes to the acquisition, design, development, or production of missiles in a country that is not an MTCR adherent and would be, if it were United States-origin equipment or technology, subject to the jurisdiction of the United States under this chapter.