North Korea's declared plan to undertake a nuclear test is not bluff, but based on action, a pro-North Korea paper in Japan reported from Pyongyang, according to South Korea's
"The nuclear test statement was announced on the premise of action," the Choson Sinbo said, according to Yonhap, which monitors the paper.
"Carrying out a nuclear test is an inevitable conclusion ... Under a condition where (the country) declared possession of nuclear weapons in February last year."
North Korea announced on Tuesday it would conduct a nuclear test to prove the country is a nuclear power.
Pyongyang claims it has nuclear weapons, but hasn't performed any known test to verify that.