The " prompt and utter destruction " clause has been interpreted as a veiled warning about American possession of the atomic bomb which had been successfully tested in New Mexico on July 16 , 1945 , the day before the Potsdam Conference opened . Although the document warned of further destruction like the '' Operation Meetinghouse '' raid on Tokyo and other carpetbombing of Japanese cities , it did not mention anything about the atomic bomb
successfully tested
Trinity (nuclear test)
Potsdam Declaration