South Korean President Yoon Suk-yeol reportedly said earlier this week that such drills are under discussion.
'Diplomacy is dead': U.S., allies pushed to devise new plan to address North Korea's nukes
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President Yoon Suk-yeol declared a one-week national mourning period to begin Sunday and ordered flags at government buildings and public offices to fly at half-staff.
Brad Wenstrup niece, Anne Marie Giesk, among the dead in South Korea Halloween crowd surge
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