This photo provided by the North Korean government, shows what is says is a new nuclear attack submarine "Hero Kim Kun Ok" at an unspecified place in North Korea Wednesday, Sept. 6, 2023. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)