Lawmakers from South Korea’s opposition party impeached Prime Minister and acting President Han Duck-soo. The impeachment is the latest event to mar South Korea after a political firestorm following a sudden, unpopular declaration of martial law by President Yoon Suk Yeol. The declaration led to Yoon’s impeachment on Dec. 14. Han’s impeachment was the first time an interim leader had been impeached in South Korean history. He was in office for just 13 days, making him...