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 summit with Japanese Prime Minister Shigeru Ishiba on Saturday, stressed the importance of setting aside their past differences as they face common challenges from the United States,

President Lee Jae Myung's visit is expected to spotlight trade, alliance costs and North Korea as he seeks to set the tone with Trump's second-term White House.