With US foreign policy in flux, Japan and South Korea are finding common ground on trade, defense, and demographic challenges.

South Korean President Lee Jae Myung, in his first full summit with Japanese Prime Minister Shigeru Ishiba in Tokyo on Saturday, stressed the importance of setting aside differences and cooperating in common areas as the leaders showcased their efforts to develop friendly ties.

On his first official visit to Japan since taking office in June, Lee will meet Prime Minister Shigeru Ishiba at the premier's residence in Tokyo to discuss bilateral ties, including closer security cooperation with the United States under a trilateral pact signed by their predecessors.