EXPLAINER: Is North Korea moving nukes to its border?

This undated photo provided on April 17, 2022, by the North Korean government shows Kim Jong Un at an undisclosed location in North Korea. It said Sunday the country has successfully test-launched a newly developed tactical guided weapon. The official Korean Central News Agency said Kim observed the launch. 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)

EXPLAINER: Is North Korea moving nukes to its border?