Shigeru Ishiba’s election as president of Japan’s ruling Liberal Democratic Party (LDP) on Friday paves the way for him to become Japan’s next prime minister on Tuesday. His leadership could have significant implications for South Korea-Japan relations, especially given his acknowledgment of Japan’s wartime responsibilities. Ishiba has openly criticized conservative factions within the LDP for downplaying Japan’s militaristic past and has refrained from visiting the controversial Yasukuni Shrine, a major point of tension with South Korea. His moderate stance on these historical disputes may create opportunities for more constructive dialogue with Seoul.

As a former defense minister, Ishiba is expected to prioritize Japan’s security, with a focus on countering North Korea’s missile threats and China’s growing assertiveness. His skepticism toward North Korea aligns him closely with South Korean President Yoon Suk-yeol, signaling potential alignment on security cooperation.