Prime Minister Han Duck-soo, a seasoned technocrat, briefly served as South Korea's acting president until his impeachment, which the Constitutional Court later overturned. Han's extensive experience under five presidents and his commitment to staying apolitical made him a notable figure during the political turmoil.

South Korea's Constitutional Court overturned acting President Han Duck-soo's impeachment, reinstating the nation's No. 2 official as acting leader on Monday.

South Korean Prime Minister Han Duck-soo has been reinstated as the acting president as the Constitutional Court overturned his impeachment.