For a number of years I served as head of the technical department at a munitions complex that made missile guidance systems and related electronic devices for North Korea's military. I was one of 100,000 or so scientific and professional people involved in the regime's weapons of mass destruction industry.

While I made enough money to modestly feed my family, I witnessed mass starvation and oppression of those less fortunate, and unspeakable abuses of power and lifestyle excesses by senior political officials of the regime. As did everyone, I lived in constant fear of being sent to the gulag for the slightest indiscretion.

Nonetheless, I was trusted with some of the regime's biggest secrets. While serving, I was sent to Iran to test launch one of our missiles with a new guidance system for the then-ruling Ayatollah Khomeini. I consulted with colleagues who were sent to serve on an operational war basis for Saddam Hussein during the first Gulf War, and others who were sent to other countries to sell, service and install such missile systems. I ordered, supervised and monitored the foreign purchases of electronic and guidance material -- 90% of which came from Japanese suppliers. I worked with some of the 60 or so Russian scientists who had been "cherry picked" by the regime to work in Pyongyang's nuclear, atomic, chemical and biological warfare programs -- and who continue to work there.[...]