23 May 2012 Last updated at 03:40 GMT North Korea is making 'rapid progress' on a major upgrade to its rocket launch site Satellite images show that a ''major upgrade'' is underway at North Korea's rocket launch site, says a United States institute.
Work at the Musudan-ri site showed "rapid progress" since mid-2011, the analysis said.
The report came as Pyongyang accused Washington of trying to ''incite confrontation'' over speculation it may carry out a third nuclear test.
North Korea ''never envisaged'' such an act, said a foreign ministry spokesman.
The remarks followed a US warning that a nuclear test would lead to a "swift and sure response" from the region.
Work at the Musudan-ri site showed "rapid progress" since mid-2011, the analysis said.
The report came as Pyongyang accused Washington of trying to ''incite confrontation'' over speculation it may carry out a third nuclear test.
North Korea ''never envisaged'' such an act, said a foreign ministry spokesman.
The remarks followed a US warning that a nuclear test would lead to a "swift and sure response" from the region.
