Prime Minister Han Duck-soo, who became South Korea's acting president after Saturday's impeachment of Yoon Suk Yeol, is a career technocrat whose wide-ranging experience and reputation for rationality could serve him well in his latest role.

Yoon Suk Yeol will be immediately suspended from office and the prime minister will serve as acting president.

T HE DAY of reckoning has arrived for Yoon Suk Yeol, South Korea’s president. The country’s National Assembly voted on December 14th to impeach him for his short-lived attempt to impose martial law earlier this month.