South Korean officials have said they believe the North is ready to carry out a nuclear test whenever leaders in Pyongyang make `` a political decision '' to go ahead with it . North Korea has carried out at least two rocket motor tests since April , website says . It cites commercial satellite imagery that shows activity at a launch site . A failed rocket launch by the west coast in 2013 scuppered a food aid deal with the North Korea . The academic website sees the possibility of rocket and nuclear tests in April .
North Korea has carried out at least two rocket motor tests since April , website says . It cites commercial satellite imagery that shows activity at a launch site . A failed rocket launch by the west coast in 2013 scuppered a food aid deal with the North Korea . The academic website sees the possibility of rocket and nuclear tests in April .