According to satellite pictures, North Korea appears to have begun renovating a decommissioned nuclear test site. After leader Kim Jong-un committed to stop all nuclear testing, the Punggye-ri facility was shut down in 2018 and certain components were blown up. The James Martin Center for Nonproliferation Studies estimates that it will take years for the facility to be ready for testing. The International Atomic Energy Agency warned in August that the North seemed to be restarting its Yongbyon nuclear reactor, increasing fears that plutonium for nuclear weapons was being manufactured at the site. They also said that North Korea may continue nuclear testing at a different location.