North Korea nuclear weapon overview
Introduction
Since its origin in 1948, North Korea generally has maintained hostile relations with South Korea, Japan, and most Western countries. It has developed a capability to produce short- and medium-range missiles, chemical weapons, and possibly biological weapons. On 10 February 2005, a spokesman for the North Korean Foreign Ministry announced that North Korea had manufactured nuclear weapons. This announcement followed Pyongyang's January 2003 declaration that the country was withdrawing from the NPT. On 19 September 2005, the North Korean delegation to the Six-Party Talks in Beijing signed a "Statement of Principles" whereby Pyongyang agreed to abandon all nuclear programs and return to the NPT and IAEA safeguards. However, on the following day a spokesman for the Foreign Ministry declared that the United States would have to provide a light-water reactor to North Korea in order to resolve the lack of trust between the two countries.
In October 2002, North Korea confirmed U.S. intelligence reports that it had a clandestine enriched uranium weapons program in violation of the Agreed Framework and the Nuclear Non-Proliferation Treaty. In December 2002, Pyongyang lifted the freeze on its plutonium-based nuclear weapons program and expelled IAEA inspectors who had been monitoring the freeze under the Agreed Framework of October 1994. North Korea’s pledge to suspend missile flight-testing until 2003 reduced tensions on the Korean peninsula and in the region, but it continues to export ballistic missiles and missile technology. In December 2002, Spanish and American naval forces intercepted a North Korean ship loaded with Scud missiles bound for Yemen; however, the shipment was allowed to proceed to its destination. North Korea conducted cruise missile tests in February and March 2003, but has not conducted a ballistic missile test since August 1998. North Korea possesses chemical weapons and is believed to have a biological weapons program even though Pyongyang has signed the Biological and Toxin Weapons Convention.
Nuclear
On 10 February 2005, a spokesman for the North Korean Foreign Ministry announced that North Korea had manufactured nuclear weapons. On 19 September 2005, the North Korean delegation to the Six-Party Talks in Beijing signed a "Statement of Principles" whereby Pyongyang agreed to abandon all nuclear programs and return to the NPT and IAEA safeguards. However, on the following day a spokesman for the Foreign Ministry declared that the United States would have to provide a light-water reactor to North Korea in order to resolve the lack of trust between the two countries. The sudden announcement raised doubts about the Statement of Principles, but the Six-Parties have agreed to meet again, probably in November 2005.
Although North Korea has not conducted a nuclear test, in early May 2005 press reports indicated that U.S. satellite imagery had detected signs that North Korea could be preparing to conduct a test in June. In early April 2005, North Korea shut down its 5MW(e) reactor in Yŏngbyŏn-kun and declared that the spent fuel would be extracted to "increase North Korea's nuclear deterrent." North Korea had been operating the reactor since late February 2003, so North Korean technicians should be able to extract enough plutonium from the spent fuel for 1-3 nuclear bombs.
North Korea's nuclear infrastructure began with the establishment of a nuclear energy research complex in Yŏngbyŏn-kun in 1964. The Soviet Union provided a small research reactor at the site in 1965, and North Korea subsequently expanded the complex and built a number of new facilities, including a large plutonium reprocessing plant (Radiochemistry Laboratory). North Korea signed the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in 1985 but did not submit to International Atomic Energy Agency (IAEA) inspections until May 1992. Discrepancies between North Korean declarations and IAEA inspection findings indicate that North Korea might have reprocessed enough plutonium for one or two nuclear weapons. According to a December 2001 National Intelligence Council report, the U.S. intelligence community ascertained in the mid-1990s that North Korea had produced one, possibly two, nuclear weapons.
In mid-2002, U.S. intelligence discovered that North Korea had been receiving materials from Pakistan for a highly enriched uranium production facility. In October 2002, the U.S. State Department informed North Korea that the U.S. was aware of this program, which is a violation of Pyongyang’s nonproliferation commitments. North Korean officials initially denied the existence of such a program, but then acknowledged it. The U.S. responded by announcing in November 2002 that it would suspend heavy fuel oil shipments being provided under the terms of the Agreed Framework, which had led North Korea to freeze its plutonium production facilities. Pyongyang then declared the following month that it was lifting the freeze on its nuclear program, ostensibly to generate electricity. In late December 2002, North Korean technicians broke seals and disabled cameras that had been installed by the IAEA in order to monitor the freeze. North Korea expelled IAEA inspectors on 31 December 2002, curtailing the Agency’s capacity to monitor Pyongyang’s nuclear activities. The IAEA has not been able to verify the completeness and correctness of North Korea’s initial declaration submitted in 1992, and the Agency cannot verify whether fissile material has been diverted to military use.
On 10 January 2003, North Korea declared its withdrawal from the NPT. The treaty requires a 90-day waiting period, but Pyongyang claimed the withdrawal was effective immediately because 89 days had transpired in 1993 when North Korea initially announced its intention to withdraw before "suspending its intention to withdraw from the treaty." In late February 2003, North Korea restarted its 5WW(e) reactor, and in March, reports indicated that technicians were active at the Radiochemistry Laboratory, and on 2 October, the North Korean Foreign Ministry declared that the reprocessing of 8,000 spent fuel rods had been completed “to increase its nuclear deterrent force.” On 12 May 2003, North Korea declared that the "Joint Declaration of the Denuclearization of the Korean Peninsula" of 20 January 1992 was no longer valid because of "violations by the United States" [Note: the United States was not a signatory].
Estimates vary on how soon North Korea could begin operating a uranium enrichment plant, but Pyongyang probably could not produce significant quantities of weapons-grade HEU until the end of the decade. In April 2003, Egyptian customs officials intercepted 22 tons of aluminum tubing from Germany that would likely have been used for a pilot cascade of about 100-200 gas centrifuges, which indicates North Korea is probably not yet ready to begin operation of a large-scale plant. North Korea has reportedly established a facility to produce UF6 at the Yŏngbyŏn nuclear complex, which gives Pyongyang the capability to produce the stock of uranium hexafluoride (UF6) gas to feed the cascades of centrifuges in a large-scale plant.
Chemical
North Korea's chemical weapons production capability is estimated to be about 4,500 tons per year, and Pyongyang appears to have emphasized the weaponization of mustard, phosgene, sarin, and V-type chemical agents. Reports indicate that North Korea has some 12 facilities where raw chemicals, precursors, and actual agents are produced and/or stored, and six major storage depots for chemical weapons ordnance. Pyongyang also has placed thousands of artillery systems—including multiple launch rocket systems that are particularly effective for chemical weapons delivery—within reach of the Demilitarized Zone (DMZ) and Seoul. North Korea has not signed the Chemical Weapons Convention (CWC).
Missile
North Korea began its missile development program in the 1970s and tested an "indigenous" Scud-B ballistic missile in April 1984. Pyongyang subsequently produced the 500km-range Scud-C, the 800km-range Scud-D, and a 1300km-range missile known as the Nodong. In August 1998, North Korea flight-tested the Paektusan-1 (Taepodong-1) in a failed attempt to place a small satellite into earth orbit. North Korea is continuing to develop the so-called “Taepodong-2,” which is estimated to have intercontinental range. The Taepodong-2 has not been flight-tested, but U.S. intelligence analysts believe it could be ready for testing at any time. Pyongyang has deployed as many as 600-750 ballistic missiles, including about 175-200 Nodongs.
In December 2002, Spanish and American naval forces intercepted a North Korean ship loaded with Scud missiles, but then allowed the ship to proceed to deliver the missiles to Yemen. There were rumors in 2003 of Burmese plans to purchase ballistic missiles from North Korea, but it is unclear whether any transactions have been completed. In late January 2004, North Korea and Nigeria reportedly agreed to a missile deal, but Nigeria backed out of the agreement in early February under U.S. pressure. North Korea has exported missiles, missile components, and technology to Egypt, Iran, Libya, Pakistan, Syria, and Yemen. In September 1999, Pyongyang agreed to a moratorium on missile flight tests and later announced that it would maintain the moratorium until at least 2003. North Korea is not a member of the Missile Technology Control Regime (MTCR).
Biological
Although Pyongyang acceded to the Biological and Toxin Weapons Convention (BWC) in 1987, North Korea is suspected of having a biological weapons program. Reports indicate that North Korea apparently began to produce biological weapons in the early 1980s. To date, North Korea has likely developed and produced anthrax bacteria, botulinum toxin, and plague bacteria.
from here
Since its origin in 1948, North Korea generally has maintained hostile relations with South Korea, Japan, and most Western countries. It has developed a capability to produce short- and medium-range missiles, chemical weapons, and possibly biological weapons. On 10 February 2005, a spokesman for the North Korean Foreign Ministry announced that North Korea had manufactured nuclear weapons. This announcement followed Pyongyang's January 2003 declaration that the country was withdrawing from the NPT. On 19 September 2005, the North Korean delegation to the Six-Party Talks in Beijing signed a "Statement of Principles" whereby Pyongyang agreed to abandon all nuclear programs and return to the NPT and IAEA safeguards. However, on the following day a spokesman for the Foreign Ministry declared that the United States would have to provide a light-water reactor to North Korea in order to resolve the lack of trust between the two countries.
In October 2002, North Korea confirmed U.S. intelligence reports that it had a clandestine enriched uranium weapons program in violation of the Agreed Framework and the Nuclear Non-Proliferation Treaty. In December 2002, Pyongyang lifted the freeze on its plutonium-based nuclear weapons program and expelled IAEA inspectors who had been monitoring the freeze under the Agreed Framework of October 1994. North Korea’s pledge to suspend missile flight-testing until 2003 reduced tensions on the Korean peninsula and in the region, but it continues to export ballistic missiles and missile technology. In December 2002, Spanish and American naval forces intercepted a North Korean ship loaded with Scud missiles bound for Yemen; however, the shipment was allowed to proceed to its destination. North Korea conducted cruise missile tests in February and March 2003, but has not conducted a ballistic missile test since August 1998. North Korea possesses chemical weapons and is believed to have a biological weapons program even though Pyongyang has signed the Biological and Toxin Weapons Convention.
Nuclear
On 10 February 2005, a spokesman for the North Korean Foreign Ministry announced that North Korea had manufactured nuclear weapons. On 19 September 2005, the North Korean delegation to the Six-Party Talks in Beijing signed a "Statement of Principles" whereby Pyongyang agreed to abandon all nuclear programs and return to the NPT and IAEA safeguards. However, on the following day a spokesman for the Foreign Ministry declared that the United States would have to provide a light-water reactor to North Korea in order to resolve the lack of trust between the two countries. The sudden announcement raised doubts about the Statement of Principles, but the Six-Parties have agreed to meet again, probably in November 2005.
Although North Korea has not conducted a nuclear test, in early May 2005 press reports indicated that U.S. satellite imagery had detected signs that North Korea could be preparing to conduct a test in June. In early April 2005, North Korea shut down its 5MW(e) reactor in Yŏngbyŏn-kun and declared that the spent fuel would be extracted to "increase North Korea's nuclear deterrent." North Korea had been operating the reactor since late February 2003, so North Korean technicians should be able to extract enough plutonium from the spent fuel for 1-3 nuclear bombs.
North Korea's nuclear infrastructure began with the establishment of a nuclear energy research complex in Yŏngbyŏn-kun in 1964. The Soviet Union provided a small research reactor at the site in 1965, and North Korea subsequently expanded the complex and built a number of new facilities, including a large plutonium reprocessing plant (Radiochemistry Laboratory). North Korea signed the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in 1985 but did not submit to International Atomic Energy Agency (IAEA) inspections until May 1992. Discrepancies between North Korean declarations and IAEA inspection findings indicate that North Korea might have reprocessed enough plutonium for one or two nuclear weapons. According to a December 2001 National Intelligence Council report, the U.S. intelligence community ascertained in the mid-1990s that North Korea had produced one, possibly two, nuclear weapons.
In mid-2002, U.S. intelligence discovered that North Korea had been receiving materials from Pakistan for a highly enriched uranium production facility. In October 2002, the U.S. State Department informed North Korea that the U.S. was aware of this program, which is a violation of Pyongyang’s nonproliferation commitments. North Korean officials initially denied the existence of such a program, but then acknowledged it. The U.S. responded by announcing in November 2002 that it would suspend heavy fuel oil shipments being provided under the terms of the Agreed Framework, which had led North Korea to freeze its plutonium production facilities. Pyongyang then declared the following month that it was lifting the freeze on its nuclear program, ostensibly to generate electricity. In late December 2002, North Korean technicians broke seals and disabled cameras that had been installed by the IAEA in order to monitor the freeze. North Korea expelled IAEA inspectors on 31 December 2002, curtailing the Agency’s capacity to monitor Pyongyang’s nuclear activities. The IAEA has not been able to verify the completeness and correctness of North Korea’s initial declaration submitted in 1992, and the Agency cannot verify whether fissile material has been diverted to military use.
On 10 January 2003, North Korea declared its withdrawal from the NPT. The treaty requires a 90-day waiting period, but Pyongyang claimed the withdrawal was effective immediately because 89 days had transpired in 1993 when North Korea initially announced its intention to withdraw before "suspending its intention to withdraw from the treaty." In late February 2003, North Korea restarted its 5WW(e) reactor, and in March, reports indicated that technicians were active at the Radiochemistry Laboratory, and on 2 October, the North Korean Foreign Ministry declared that the reprocessing of 8,000 spent fuel rods had been completed “to increase its nuclear deterrent force.” On 12 May 2003, North Korea declared that the "Joint Declaration of the Denuclearization of the Korean Peninsula" of 20 January 1992 was no longer valid because of "violations by the United States" [Note: the United States was not a signatory].
Estimates vary on how soon North Korea could begin operating a uranium enrichment plant, but Pyongyang probably could not produce significant quantities of weapons-grade HEU until the end of the decade. In April 2003, Egyptian customs officials intercepted 22 tons of aluminum tubing from Germany that would likely have been used for a pilot cascade of about 100-200 gas centrifuges, which indicates North Korea is probably not yet ready to begin operation of a large-scale plant. North Korea has reportedly established a facility to produce UF6 at the Yŏngbyŏn nuclear complex, which gives Pyongyang the capability to produce the stock of uranium hexafluoride (UF6) gas to feed the cascades of centrifuges in a large-scale plant.
Chemical
North Korea's chemical weapons production capability is estimated to be about 4,500 tons per year, and Pyongyang appears to have emphasized the weaponization of mustard, phosgene, sarin, and V-type chemical agents. Reports indicate that North Korea has some 12 facilities where raw chemicals, precursors, and actual agents are produced and/or stored, and six major storage depots for chemical weapons ordnance. Pyongyang also has placed thousands of artillery systems—including multiple launch rocket systems that are particularly effective for chemical weapons delivery—within reach of the Demilitarized Zone (DMZ) and Seoul. North Korea has not signed the Chemical Weapons Convention (CWC).
Missile
North Korea began its missile development program in the 1970s and tested an "indigenous" Scud-B ballistic missile in April 1984. Pyongyang subsequently produced the 500km-range Scud-C, the 800km-range Scud-D, and a 1300km-range missile known as the Nodong. In August 1998, North Korea flight-tested the Paektusan-1 (Taepodong-1) in a failed attempt to place a small satellite into earth orbit. North Korea is continuing to develop the so-called “Taepodong-2,” which is estimated to have intercontinental range. The Taepodong-2 has not been flight-tested, but U.S. intelligence analysts believe it could be ready for testing at any time. Pyongyang has deployed as many as 600-750 ballistic missiles, including about 175-200 Nodongs.
In December 2002, Spanish and American naval forces intercepted a North Korean ship loaded with Scud missiles, but then allowed the ship to proceed to deliver the missiles to Yemen. There were rumors in 2003 of Burmese plans to purchase ballistic missiles from North Korea, but it is unclear whether any transactions have been completed. In late January 2004, North Korea and Nigeria reportedly agreed to a missile deal, but Nigeria backed out of the agreement in early February under U.S. pressure. North Korea has exported missiles, missile components, and technology to Egypt, Iran, Libya, Pakistan, Syria, and Yemen. In September 1999, Pyongyang agreed to a moratorium on missile flight tests and later announced that it would maintain the moratorium until at least 2003. North Korea is not a member of the Missile Technology Control Regime (MTCR).
Biological
Although Pyongyang acceded to the Biological and Toxin Weapons Convention (BWC) in 1987, North Korea is suspected of having a biological weapons program. Reports indicate that North Korea apparently began to produce biological weapons in the early 1980s. To date, North Korea has likely developed and produced anthrax bacteria, botulinum toxin, and plague bacteria.
from here
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