Export controls are U.S. laws and regulations that govern the shipment, transmission, or transfer of sensitive equipment, information, and software to foreign countries, persons, or entities. Export controls exist to protect the national security and foreign policy interests of the United States. These laws and regulations work to achieve adequate oversight on the transfer and use of the products and materials required for developing proliferation-sensitive parts of the nuclear fuel cycle.

Fentanyl analogs are illicit—and often deadly—alterations of the medically prescribed drug fentanyl. The analogs have similar—but not the same—chemical structure, and they mimic the pharmacological effects of the original drug.