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. 

This paper discusses the development and delivery of a workshop on the “Fundamentals of Physical Protection”, which has been run since the early 1990s, as part of the UK’s Global Threat Reduction Programme (GTRP). Over the years, the workshop has brought together a wide range of international practitioners – from operators, regulators and government bodies to share their nuclear security knowledge and experiences. 

"...[I]t's unclear who — if anyone — would buy North Korean nuclear technology. However, the nightmare scenario of North Korea selling it to the highest bidder merits consideration."