The Associated Press reported on Dec. 27, 2012 that satellite photos indicate North Korea has repaired flood damage at its nuclear test facility and is now capable of conducting a nuclear test explosion at the site. According to 38 North, a program of the U.S.-Korea Institute at SAIS, North Korea is capable of conducting a nuclear test at the site "in as little as two weeks" from the point a decision to proceed is made.
North Korea conducted a satellite launch on Dec. 12, 2012, which many believe was meant to gather data to construct an intercontinental ballistic missile. The United States has called for additional international sanctions against the state and the UN Security Council is currently negotiating its response to the launch, which was a violation of past UN Security Council resolutions.
If history is any indication, North Korea may very well test a nuclear device if additional Security Council sanctions are levied. North Korea's two previous nuclear tests in 2006 and 2009 were conducted weeks after the Council imposed sanctions on Pyongyang.
For more information, see: https://www.usnews.com/news/world/articles/2012/12/28/ap-exclusive-photos-show-nkorea-nuclear-readiness