South Korea’s new President Lee Jae-myung says he’ll pursue dialogue with North Korea while bolstering a trilateral partnership with the U.S. and Japan.

Lee faces the most daunting set of challenges for a South Korean leader in nearly three decades, ranging from healing a country scarred by the martial law attempt to tackling unpredictable U.S. protectionist moves.

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.