Well this changes things a bit...

It seems that North Korea's nuclear test was successful. Happened about two hours ago. From CNN:

North Korea confirms nuclear test
North Korea's official Korean Central News Agency (KCNA) reported Monday the country has performed a successful nuclear test.

South Korean government officials also said North Korea performed its first nuclear test, the South's Yonhap news agency reported.

According to KCNA, there was no radioactive leakage from the site.

South Korean officials could not immediately confirm the Yonhap report.

South Korean President Roh Moo-hyun convened an urgent meeting of security advisers over the issue, Yonhap reported.

The North said last week it would conduct a nuclear test as part of its deterrent against a possible U.S. invasion.

From CTV Canada:

North Korea claims first nuclear weapon test
North Korea has claimed to carry out what its neighbours have long feared -- the test of a nuclear weapon.

"The nuclear test is a historic event that brought happiness to our military and people," said a quote carried Monday by the Korean Central News Agency, the communist state's official agency.

"The nuclear test will contribute to maintaining peace and stability in the Korean peninsula and surrounding region."

And a bit more:

The test occurred at 9:36 p.m. EDT Sunday night (10:36 a.m. local time on Monday), it said, citing defence officials as a source.

However, the U.S. Geological Survey said it hasn't detected any seismic activity on the Korean peninsula in the past 48 hours of the type one might expect from a nuclear test.

The North had been threatening such a test as part of its deterrent against what it claims is a possible U.S. invasion. The U.S. has said it has no plans to invade the country it once called part of an "axis of evil."

The seismic data will be crucial. It is possible to detect the differences between nuclear and conventional explosives and to pinpoint their site of detonation. It seems (from another source) that there has been a 3.5Mag quake recorded in NoKo but the data for that is not fully in yet. If the test was successful, it will be a big concern as NoKo is the primary source of munitions for terrorists. Due to government mismanagement, the nation is incredibly poor so being able to offer a nuke or two for sale would cause any number of the islamist pigs to salivate greatly.