Shigeru Ishiba

Shigeru Ishiba (born 4 February 1957) is a Japanese politician who served as Prime Minister of Japan and President of the Liberal Democratic Party (LDP) from 2024 until his resignation in 2025. He has represented Tottori 1st in the House of Representatives since 1996. Before his premiership, he was the Minister of Defense from 2007 to 2008 and Minister of Agriculture, Forestry and Fisheries from 2008 to 2009, as well as Secretary-General of the LDP from 2012 to 2014.

The son of politician Jirō Ishiba, he graduated from Keio University in 1979. Prior entering politics after his father's death, Ishiba worked at a bank before being elected to the House of Representatives in the 1986 general election as a member of the LDP at the age of 29. As a Diet member, Ishiba specialized in agricultural policy and defense policy. He served as parliamentary vice minister of agriculture under the premiership of Kiichi Miyazawa, but left the LDP in 1993 to join the Japan Renewal Party. After transitioning through several parties and returning to the LDP in 1997, Ishiba held various prominent positions, including Director-General of the Defense Agency under the premiership of Junichiro Koizumi, Minister of Defense under the premiership of Yasuo Fukuda and Minister of Agriculture, Forestry and Fisheries under the premiership of Tarō Asō.

Ishiba became a key figure within the LDP, running for party leadership multiple times. First in 2008 where he placed fifth, and notably against Shinzo Abe in the 2012 and 2018 elections. Despite his criticisms of LDP factionalism, he established his own faction, Suigetsukai, in 2015, aiming for leadership. After Abe's second resignation, Ishiba ran again for party president in 2020, but placed third behind Yoshihide Suga. Ishiba declined to run and endorsed Taro Kono in the 2021 election which was won by Fumio Kishida. After Kishida announced that he would step down, Ishiba contested for the fifth time in the 2024 election where he defeated Sanae Takaichi in a second round run-off, becoming the new party leader and prime minister–designate, and was formally elected Prime Minister by the National Diet on 1 October 2024.

As prime minister, Ishiba almost immediately announced a snap general election, where the ruling LDP coalition lost its majority in the House of Representatives for the first time since 2009, suffering its second-worst result in party history. In the National Diet, Ishiba relied on opposition parties to pass legislation due to his coalition's minority government status. On foreign policy, Ishiba moved Japan economically closer to India and South Korea amidst protectionist policies being employed by the United States, while continuing to support Ukraine during the Russian invasion that began in 2022. After the LDP-Komeito coalition lost its majority in the House of Councillors after a poor result in the 2025 election, Ishiba began to face calls within the LDP for him to resign. Ishiba initially announced he planned to remain as prime minister, citing the need to see through tariff negotiations with the United States. He eventually announced his intention to resign as party president and as prime minister in September 2025, and was succeeded as prime minister by Takaichi the next month.

Ishiba has developed a reputation throughout his career as a political maverick due to his willingness to criticize his own party, as well as his relatively liberal stances on social issues; he supported a motion of no-confidence against the Miyazawa Cabinet in 1993 and criticized Abe throughout his second premiership, despite serving in the governments of both prime ministers. During his tenure as prime minister however, Ishiba was criticized for being too hesitant to embrace reform and for reversing several of his earlier positions.