; or (II) goods, services, or technology not described in the matter preceding subclause (I) or subclause (I) but which nevertheless the President determines would be, if such goods, services, or technology were United States goods, services, or technology, prohibited for export to Iran because of their potential to make a material contribution to the development of ballistic missile systems or ballistic missile launch technologies. (iv) Procurement Working Group defined In clause (iii)(I), the term procurement working group means the Procurement Working Group of the Joint Commission established under Annex IV of the applicable provisions in Annex A of United Nations Security Council Resolution 2231 (2015). . (g) Sanctionable activities with respect to conventional weapons Paragraph (1) of section 5(b) of the Iran Sanctions Act of 1996 ( Public Law 104–172 ; 50 U.S.C. 1701 note), as amended by subsections (e) and (f), is further amended by adding at the end the following: (C) Conventional weapons The President shall impose the sanctions described in paragraph (8) or (12) of section 6(a), as the case may be, with respect to a foreign person or an agency or instrumentality of a foreign state if the President determines that the person or agency or instrumentality knowingly, on or after the date of the enactment of this paragraph, imports, exports, or re-exports to, into, or from Iran, whether directly or indirectly, any significant arms or related materiel prohibited under Annex B of United Nations Security Council Resolution 2231 (2015). . (h) Exception and definitions Paragraph (1) of section 5(b) of the Iran Sanctions Act of 1996 ( Public Law 104–172