The networks of middlemen and intermediaries involved in the illicit procurement of weapons of mass destruction (WMD)-related goods and technologies often operate outside of the United States, which presents several legal and political challenges regarding U.S. trade control enforcement activities. This report considers the extraterritorial efforts of U.S. law enforcement in counterproliferation-related activities and their implications. In other words, how does the United States contend with violations of its weapons of mass destruction (WMD)-related trade controls in overseas jurisdictions, and what are the implications for broader U.S. and international nonproliferation efforts, as well as wider international security and economic concerns? 

Since the 1979 revolution, Iran has sought to illicitly procure parts for the U.S. origin fighter aircraft sold to the country under the rule of the Shah. The U.S. has taken steps to quash this trade—these efforts have constituted a relatively large proportion of U.S. export control enforcement over the past near-to-four decades.