The Bush administration is expanding what it calls "defensive measures" against North Korea, urging nations from China to the former Soviet states to deny overflight rights to aircraft that the United States says are carrying weapons technology, according to two senior administration officials.
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The new campaign was speeded up this summer after a previously undisclosed incident in June, when American satellites tracked an Iranian cargo plane landing in North Korea. The two countries have a history of missile trade - Iran's Shahab missile is a derivative of a North Korean design - and intelligence officials suspected the plane was picking up missile parts.
Rather than watch silently, senior Bush administration officials began urging nations in the area to deny the plane the right to fly over their territory. China and at least one Central Asian nation cooperated, according to senior officials, who confirmed the outlines of the incident to demonstrate that President Bush's strategy to curb proliferation, which has been criticized by some experts for moving too slowly, is showing results. The officials insisted on anonymity because they were discussing sensitive information.
The officials said they believed the Iranian plane left without its cargo, but they were not sure. Nonetheless, the new effort underscored the efforts the administration is undertaking to curb the North's exports of missile parts, drugs and counterfeit currency that are widely believed to be its main source of revenue and the way it finances its nuclear program.
http://www.nytimes.com/2005/10/24/international/asia/24korea.html