FILE PHOTO: A satellite image shows new buildings in the Punggye-ri nuclear test site, Kilju County, North Hamgyong province, North Korea, March 28, 2022. Picture taken March 28, 2022. Satellite image 2022 Maxar Technologies/Handout via REUTERS
FILE PHOTO: A satellite image shows new buildings in the Punggye-ri nuclear test site, Kilju County, North Hamgyong province, North Korea, March 28, 2022. Picture taken March 28, 2022. Satellite image 2022 Maxar Technologies/Handout via REUTERS