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CRS-1 (October 18, 2006)

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                                                                Order Code RS21391
                                                            Updated October 18, 2006



 CRS Report for Congress
               Received through the CRS Web



          North Korea's Nuclear Weapons:
                    Latest Developments

                            Sharon Squassoni
                      Specialist in National Defense
               Foreign Affairs, Defense, and Trade Division

Summary

     On October 9, 2006, North Korea conducted a nuclear test, with a yield of under
 1 kiloton (vice the anticipated 4-kiloton yield). The United States and other countries
 condemned the test and the U.N. Security Council passed Resolution 1718 on October
 14, which requires North Korea to refrain from nuclear or missile tests, rejoin the
 Nuclear Nonproliferation Treaty (NPT), and dismantle its WMD programs. The test is
 the latest provocative act of many since 2002, when North Korea ended an eight-year
 freeze on its plutonium production program, expelled international inspectors and
 restarted facilities. North Korea may now have enough Pu for eight to ten weapons,
 having continued its production throughout the fits and starts of the Six-Party Talks.
 This report will be updated as needed.

 Background

    In the early1980s, U.S. satellites tracked a growing indigenous nuclear program in
North Korea. A small nuclear reactor at Yongbyon (5MWe), capable of producing about
6kg of plutonium per year, began operating in 1986.1 Later that year, U.S. satellites
detected high explosives testing and a new plant to separate plutonium. In addition,
construction of two larger reactors (50MWe at Yongbyon and 200MWe at Taechon)
added to evidence of a serious clandestine effort. Although North Korea had joined the
Nuclear Nonproliferation Treaty in 1985, the safeguards inspections that began only in
1992 raised questions about how much plutonium North Korea had produced covertly.
In 1994, North Korea pledged, under the Agreed Framework with the United States, to
freeze its plutonium programs and eventually dismantle them in return for several kinds
of assistance.2 At that time, Western intelligence agencies estimated that North Korea had



1 5MWe is a power rating for the reactor, indicating that it produces 5 million watts of electricity
per day (very small). Reactors are also described in terms of million watts of heat (MW thermal).

2 See CRS Report RL33590, North Korea's Nuclear Weapons Program, by Larry Niksch.

       Congressional Research Service 4- The Library of Congress

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