Following are some reactions to his victory: "We congratulate President Lee Jae-myung on his election as the next president of the Republic of Korea (ROK)." "The United States and the Republic of Korea share an ironclad commitment to the Alliance grounded in our Mutual Defence Treaty,

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.