Annex B of resolution 2231 (2015) also requires all States to take the following actions:

Pursuant to paragraph 6 (f) of Annex B of resolution 2231 (2015), all States are to take the required actions, in accordance with the resolution and guidance provided by the Security Council, with respect to items the supply, sale, transfer, or export of which is being undertaken contrary to the provisions contained in the JCPOA or this statement, and cooperate in such efforts.

Further, paragraph 7 of Annex B of resolution 2231 (2015) calls upon all States to facilitate full implementation of the JCPOA by:

• Inspecting, in accordance with their national authorities and legislation and consistent with international law, in particular the law of the sea and relevant international civil aviation agreements, all cargo to and from Iran, in their territory, including seaports and airports, if the State concerned has information that provides reasonable grounds to believe that the cargo contains items the supply, sale, transfer, or export of which is being undertaken contrary to the provisions contained in the JCPOA or Annex B of resolution 2231 (2015); and
• Cooperating in inspections on the high seas with the consent of the flag State, if there is information that provides reasonable grounds to believe the vessel is carrying items the supply, sale, transfer or export of which is being undertaken contrary to the provisions contained in the JCPOA or Annex B of resolution 2231 (2015).

Moreover, paragraph 26 of resolution 2231 (2015) urges all States, relevant United Nations bodies and other interested parties, to cooperate fully with the Security Council in its exercise of the tasks related to this resolution, in particular by supplying any information at their disposal on the implementation of the measures in this resolution.