Nuclear security

North Korea’s Punggye-ri Nuclear Test Site: Unusual Activity Observed

On April 21, 2018 the state-run Korean Central News Agency (KCNA), quoted North Korean leader Kim Jong Un as saying, “under the proven condition of complete nuclear weapons, we no longer need any nuclear tests, mid-range and intercontinental ballistic rocket tests, and that the nuclear test site in northern area has also completed its mission.” Commercial satellite imagery of the Punggye-ri Nuclear Test Site from April 20, the day before the site’s closure was announced, shows some unusual activity. Most notably, approximately one dozen mining carts—at least eight connected in a long train—could be observed in an unusual arrangement on the spoil pile in the area closest to the West Portal. It is too early to conclude whether this display is related to Kim Jong Un’s announcement.