; (3) encouraging all nations, in accordance with United Nations Security Council resolutions, to end the practice of hosting North Korean citizens as guest workers, recognizing that such workers are demonstrated to constitute an illicit source of revenue for the Kim regime and its nuclear ambitions; (4) working with the international community on rigorous interdiction of shipments to and from North Korea, including ship-to-ship transfers, consistent with United Nations Security Council resolutions that have banned nearly every major export from North Korea; and (5) strictly enforcing United States laws with respect to sanctioning entities, including Russian and Chinese entities, that knowingly engage with sanctioned entities from North Korea or trade in items prohibited under United Nations Security Council resolutions. (d) Proliferation of nuclear and missile technology It is the policy of the United States— (1) to prevent the transfer of nuclear weapons, missile technology or related material to or from North Korea and other states or non-state actors; (2) to support the efforts of the international community to detect, interdict, and prevent the transfers of nuclear or missile technology or related items to or from North Korea; (3) to prioritize close coordination with global partners, including through technical assistance and capacity building, to enhance the ability of the global community to monitor, interdict, and prosecute entities that engage in transfer of nuclear weapons, missile technology, or related material to or from North Korea; and (4) consistent with United States obligations under the nuclear nonproliferation treaty— (A) to not assist any country, including Japan and the Republic of Korea, in the development of nuclear weapons