Who has the authority to classify or declassify atomic energy information?

The authority to classify or declassify atomic energy information is held by the Department of Energy. This is because the Department of Energy is responsible for overseeing national policies regarding nuclear energy and ensuring that information related to atomic energy is appropriately classified to protect national security interests. The specific guidelines for the classification of atomic energy information are outlined in various statutes and regulations that grant the Department of Energy exclusive jurisdiction over this sensitive information. Other entities, such as the Department of Defense or NATO, do not have the same level of authority over atomic energy information, which is why they do not have the power to classify or declassify such information.