A TV screen shows an image of North Korean leader Kim Jong Un during a news program at the Seoul Railway Station in Seoul, South Korea, Friday, March 24, 2023. North Korea said Friday its cruise missile launches this week were part of nuclear attack simulations that also involved a detonation by a purported underwater drone as leader Kim Jong Un vowed to make his rivals "plunge into despair." The letters read "Developing since 2012 and it named "Haeil" on 2021." (AP Photo/Lee Jin-man)