Iran’s involvement in illicit nuclear activities, support for terrorism, and abuse of human rights has led the United States, as well as other nations, to impose sanctions in an attempt to curb these activities. According to the Department of State (State), the sanctions are intended to, among other things, target sectors of the Iranian economy that are relevant to Iran’s proliferation activities and block the transfer of weapons and technology related to Iran’s missile and nuclear programs. One of the measures enacted by the United States, intended to limit resources available for proliferation and support for terrorism, imposes sanctions on firms that sell refined petroleum products to Iran.