South Korean President Yoon Suk Yeol declared martial law and now faces impeachment over the surprising move from opposition lawmakers.

South Korean lawmakers began impeachment proceedings against President Yoon Suk Yeol after he briefly imposed martial law and then reversed course on that decision just hours later. Yoon claimed martial law was necessary to protect the country from "North Korea's communist forces" and to "eliminate anti-state elements.

President Yoon Suk Yeol’s stunning martial law declaration lasted just hours, but experts say it raised serious questions about his ability to govern for the remaining 2 1/2 years of his term