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Counter Proliferation Investigation Unit

New Jersey man pleads guilty to illegally brokering sale of numerous military items, rocket technology to South Korea

MIAMI - A Short Hills, N.J., man pleaded guilty May 24 to brokering military aircraft and rocket technology to South Korea without being registered through the Department of State, following a U.S. Immigration and Customs Enforcement (ICE) led investigation.

Juwhan Yun, aka Jw Yun, 69, pleaded guilty to one count of violating the Arms Export Control Act: engaging in prohibited brokering activities in negotiating and arranging contracts, purchases, sales and transfers of defense articles in return for a fee, commission and other consideration, without first obtaining the written permission of the Department of State, Office of Defense Trade Controls. These items and technology included SU-27 Russian fighter aircraft, F-16 fighter aircraft, F-5 fighter aircraft, C-130 military cargo aircraft, parts for the Vulcan 20mm cannon, Russian missile air defense systems, the Nike missile system, and a RD-180 rocket engine along with the associated technology.

According to court documents, Yun was previously convicted of conspiring to export Sarin gas in violation of the Arms Export Control Act and was previously sentenced to 39 months in prison. As a result of the May 24 guilty plea, Yun faces up to 10 years in prison at his sentencing on Aug. 20 at 10 a.m.

As early as December 2008, Yun attempted to acquire RD-180 rocket propulsion systems, engines and related technology for the Republic of South Korea. These items are classified as defense articles under the U.S. Munitions List.

The investigation was conducted by ICE's Office of Investigations in Fort Lauderdale, Fla., the U.S. Department of Defense's Defense Criminal Investigative Service, and NASA Office of the Inspector General's Office of Criminal Investigations, with the assistance of the State Department's Directorate of Defense Trade Controls.

The case is being prosecuted by Assistant U.S. Attorney Michael Walleisa.