Experts say US access to Ukrainian resources remains years away due to security risks, damaged infrastructure, and a lack of modern geological surveys.
Ukrainian sources told CNN Pyongyang's soldiers arrived in occupied Mariupol, and operate in Kharkiv Oblast. Regional military command denied the Kharkiv report.
The NPP is reliant on a single power line following Russian shelling. Ukraine's Energy Ministry warns of severe nuclear safety risks, urging international action at an IAEA meeting to restore Ukrainian control.