WASHINGTON — North Korea may be preparing for its third nuclear test, a show of defiance as the United Nations considers new sanctions on the dictatorship for conducting an underground nuclear explosion in May, according to a U.S. government official.
North Korea conducted an underground explosion on May 25, its first since a 2006 atomic test. The official, who spoke Thursday on condition of anonymity in order to discuss the information publicly, would not provide details regarding the assessment.
A draft U.N. resolution proposed Wednesday would impose tough sanctions on North Korea’s weapons exports and financial dealings, and allow inspections of suspect cargo in ports and on the high seas. North Korea has threatened to retaliate if new sanctions are adopted.



