Lee Jae-myung was sworn in as South Korea's president on Wednesday, just hours after his victory was certified in a snap election that brought an end to months of political turmoil in the country.

The U.S. ally has been without a permanent leader since late last year, when Yoon Suk Yeol was impeached over his botched declaration of martial law.

South Korea's voters cast their ballots in a snap presidential election sparked by the impeachment of Yoon Suk Yeol.