Kim's tunnel explosions a goodwill gesture? Not so fast

Billing it as an exercise in transparency, North Korean officials invited international journalists to witness the detonation of their underground nuclear test tunnels at Punggye-ri — but intelligence has increasingly shown that the public spectacle may have amounted to little more than a show, according to US intelligence and international arms control officials…

“The explosions seem to have been too small” for scientists to have discerned any significant geologic activity such as collapsing tunnels, an international arms control official who follows North Korea closely told CNN.

“The fact that journalists were reportedly only around 500 meters from the explosions is a good indication that these were small blasts. And the amount of dust leads us to believe that they were quite superficial,” the official said.