North Korea reports nuke test

Looks like the N. Koreans have conducted an underground test of a nuclear device. The U.N. Security Council to meet this morning.

Here's the evidence:
DPRK [Democratic People?s Republic of Korea] Official Statement
USGS Detection

and some of the reporting:
USA Today
Orlando Sentinel
International Herald Tribune

Questions of the day:

What can the UN propose against the DPRK since they are already the most isolated and sanctioned countries in the world?

What will be the response from King George and his adinistration? (This is much more than “rumor” of weapons of mass destruction that lead to the invasion and occupation of Iraq.)