N Korean nukes unknown
523000
US Secretary of State Colin Powell is acknowledging that American intelligence experts do not know how far along North Korea&#39;s nuclear weapons programme is and may not be able to find out.
331060
WASHINGTON - South Korea secretly conducted an experiment more than 20 years ago with traces of plutonium, a key ingredient in making nuclear weapons, a senior US official disclosed.
451278
South Korea must not conduct any more nuclear experiments without notifying the United Nations, because any secret nuclear activity, however small, is a matter of "serious concern," the U.N. nuclear chief said Sunday.
367936
North Korea has made another strong statement about its nuclear capability. At the United Nations on Monday, a North Korean minister said his country had made arms from reprocessed nuclear fuel rods.
512477
Secretary of State Colin L. Powell is acknowledging that US intelligence experts do not know how far along North Korea&#39;s nuclear weapons program is and may not be able to find out.
540632
There is concern in Japan and South Korea that North Korea might be preparing to launch a ballistic missile. Officials in both Japan and South Korea say that since Tuesday, they have detected signs of activity
665724
There&#39;s no evidence South Korea was trying to make nuclear weapons when 14 of its scientists secretly produced enriched uranium and plutonium without government approval, the United Nations nuclear watchdog said.
722658
Inspectors from the International Atomic Energy Agency (IAEA) have been investigating South Koreaâs nuclear-related facilities after learning that its government secretly produced small quantities of nuclear material, apparently in violation of its IAEA
592806
NORTH Korean missile bases are under close surveillance after increased activity detected by US and Japanese surveillance raised fears Pyongyang might be preparing to launch a missile across the Sea of Japan.
70288
The United States does not believe North Korea has conducted nuclear tests, but it is unclear whether a reported blast there three days ago showed
403150
Pyongyang will not meet target for disabling key reactor and revealing nuclear programmes, diplomats say
719854
VIENNA South Korean nuclear experiments that were revealed earlier this year produced minute amounts of plutonium and near-weapons-grade uranium but there was no evidence linking them to an attempt to make nuclear arms, the UN atomic monitoring agency said
108983
A huge mushroom cloud that reportedly billowed up from North Korea was not caused by a nuclear explosion, South Korean and U.S. officials said Sunday, but they said the cause was a mystery.
302636
VIENNA, Austria  - South Korean nuclear experiments revealed earlier this year produced minute amounts of plutonium and near-weapons grade uranium but there was no evidence linking them to an attempt to make nuclear arms, the UN atomic watchdog agency said Thursday.
375343
SEOUL, South Korea - A huge explosion in the northern part of North Korea sent a plume of smoke more than two miles wide into the air on an important anniversary of the secretive communist regime, a South Korean news agency reported Sunday. Secretary of State Colin Powell said the explosion Thursday was not a nuclear test but that it was not known yet what caused it...
19588
A huge explosion rocked North Korea last  week but U.S. and South Korean officials said on Sunday it was  unlikely to have been a nuclear weapons test despite the  appearance of a "peculiar cloud" over the area.
17522
North Korea believes Washington has atomic weapons deployed in South Korea and it will not halt its nuclear program as long as this threat persists, Itar-Tass news agency quoted a North Korean source as saying on Thursday.