Ishiba, Lee agree closer cooperation

Japanese Prime Minister Shigeru Ishiba and South Korean President Lee Jae Myung agreed on Saturday to closer security and economic ties ahead of Lee's planned summit with US President Donald Trump on Monday.

On his first official visit to Japan since taking office in June, Lee met Ishiba at the premier's residence in Tokyo to discuss bilateral ties between the East Asia neighbours, including closer security coordination with the United States under a trilateral pact signed by their predecessors.

"As the strategic environment surrounding both our countries grows increasingly severe, the importance of our relations, as well as trilateral cooperation with the United States, continues to grow," Ishiba said in a joint announcement with Lee after their meeting.

The leaders agreed to resume shuttle diplomacy, expand exchanges such as working holiday programs, and step up cooperation in defence, economic security, artificial intelligence and other areas. They also pledged closer coordination against North Korea's nuclear and missile threats.

The snap election victory of the liberal Lee — following the impeachment of conservative President Yoon Suk Yeol for declaring martial law — raised concerns in Tokyo that relations with Seoul could sour. Lee has criticised past efforts to improve ties strained by lingering resentment over Japan's 1910-45 colonial rule of the Korean Peninsula.

The South Korean government last week expressed "deep disappointment and regret" after Japanese officials visited a shrine in Tokyo to Japan's war dead that many Koreans see as a symbol of Japan's wartime aggression.

In Tokyo, however, Lee reaffirmed support for closer relations with Japan as he did when he met Ishiba for the first time in June on the sidelines of a Group of Seven summit in Canada.