New commercial satellite imagery of the Punggye-ri Nuclear Test Site from March 7 indicates activity at the North Portal, Main Administrative Area and Command Center. The sum of these activities supports an assessment that North Korea continues to prepare the tunnels at the North Portal for a future nuclear test. It also suggests that Punggye-ri is capable of handling a sixth nuclear test on short notice once a nuclear device and the associated monitoring equipment are emplaced. However, it is not possible to predict the timing of such a test based on the latest image.
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