Editing Ichirō Hatoyama (section)

==Pre-war political career==
[[File:Hatoyama Hall 2009.jpg|thumb|left|[[Hatoyama Hall]], which Ichiro Hatoyama had built in 1924.]]
After his father died in 1911, Hatoyama was elected in the 1912 by-election for his father's seat in the [[Tokyo Metropolitan Assembly|Tokyo City Council]]. In the [[1915 Japanese general election|1915 House of Representatives election]], Hatoyama was elected from Tokyo district and belonged to the [[Rikken Seiyukai]]. A rival in the same constituency was [[Bukichi Miki]], who later became a close friend and ally.{{sfn|Itoh|2003|pp=49-75}}

Property inherited from his father in Otowa, [[Bunkyō]], Tokyo, was destroyed in the [[1923 Great Kanto Earthquake]]. Hatoyama solicited his friend [[Okada Shinichirō|Shinichirō Okada]] to design a western-style residence in its stead. It was finished the following year and was called the Otowa Palace, and later Hatoyama Hall.<ref>{{cite web |url=https://www.hatoyamakaikan.com/history/ |title=建物の歴史 |publisher=Hatoyama Hall |access-date=14 July 2023}}</ref>

When [[Keigo Kiyoura]] became prime minister in January 1924 the Rikken Seiyukai split over whether or not to support him. [[Suzuki Kisaburo|Kisaburo Suzuki]], the husband of Hatoyama's elder sister Kazuko, served as Minister of Justice in the new cabinet. Hatoyama participated in the [[Seiyūhontō]] organised by pro-Kiyoura forces led by [[Takejirō Tokonami]]. In June Kiyoura had to resign in favour of [[Takaaki Kato]], who had formed a coalition of his own [[Kenseikai]], the Seiyukai and the [[Kakushin Club]]. Seiyūhontō became the main opposition.{{sfn|Magill|2014a|pp=120-122}}

The Seiyukai withdrew from the coalition in July 1925. The Seiyūhontō moved towards coalition with the Kenseikai, but Hatoyama opposed this and left the party with about twenty Diet members in December. They returned to the Seiyukai in February the following year. Hatoyama was close to the new party president [[Giichi Tanaka]] who made him Secretary-General in March. Hatoyama's brother-in-law Kisaburo Suzuki joined the party around this time.{{sfnm|Itoh|2003|1pp=49-75|Magill|2014b|2pp=1574–1576}}

Tanaka was appointed prime minister in April 1927 and Hatoyama became his [[Chief Cabinet Secretary]]. Hatoyama befriended [[Shigeru Yoshida]], who served as vice minister for foreign affairs at the same time. After the cabinet fell in July 1929 [[Rikken Minseito|Minseito]] president [[Osachi Hamaguchi]] became prime minister and the Seiyukai fell to the opposition. Tanaka died in September. Kisaburo Suzuki, with the support of Hatoyama, had become the most influential factional leader in the party at this time, but Takejirō Tokonami had rejoined the party to contest the presidency. In order to prevent a split the respected elder [[Tsuyoshi Inukai]] was selected instead. During his time in the opposition Hatoyama criticised the [[London Naval Treaty]].{{sfn|Magill|2014b|pp=1574–1576}}<ref name=Fukui>{{cite book |last=Fukui |first=Haruhiro |date=28 May 2021 |title=Party in Power: The Japanese Liberal-Democrats and Policy-making |url=https://books.google.com/books?id=EDssEAAAQBAJ |location= |publisher=University of California Press |page=23-24 |isbn=978-0520369016}}</ref><ref name=Saito10>{{cite web |url=https://www.nippon.com/ja/japan-topics/c08510/ |title=占領期最大の恐怖「公職追放」：鳩山一郎と吉田茂の大げんか（10） |last=Saito |first=Katsuhisa |date=18 March 2021 |website=nippon.com |publisher=Nippon Communications Foundation |access-date=14 July 2023}}</ref>
===Cabinet minister and party leader===
[[File:Ichiro hatoyama.jpg|thumb|right|Hatoyama in 1932.]]
When Inukai was made prime minister in December 1931, Hatoyama became Minister of Education. Inukai was assassinated in the [[May 15 incident]] and Suzuki was elected to succeed him as Seiyukai president, but he didn't become prime minister, as the [[genrō]] [[Prince Saionji]] preferred to nominate Admiral [[Makoto Saito]]. Hatoyama continued in his post and became involved in a controversy in March 1933 when he had a professor at [[Kyoto Imperial University]] dismissed for leftist views. In March 1934 he was forced to resign due to alleged corruption in the [[Teijin Incident]], which eventually led to the downfall of the Saito cabinet.{{sfn|Magill|2014b|pp=1574–1576}}<ref name=Teijin>{{cite book |last=Mitchell |first=Richard H. |date=31 March 2002 |title=Justice in Japan: The Notorious Teijin Scandal |url=https://books.google.com/books?id=Zo40clDmxiUC |publisher=University of Hawaii Press |page=77 |isbn=978-0824825232}}</ref>

When Suzuki was once again passed over as prime minister, this time in favour of Admiral [[Keisuke Okada]], the Seiyukai moved into the opposition, even expelling members who accepted positions in the new cabinet. By this time Hatoyama had become one of the most powerful men in the Seiyukai as the right-hand man of his brother-in-law.<ref name=Teijin></ref>

The Seiyukai took major losses in the [[1936 Japanese general election|1936 general election]] and this led Suzuki to resign the following year. Hatoyama and [[Chikuhei Nakajima]] were the leading candidates for the presidency, but to prevent schism a "Presidential Proxy Committee" was formed consisting of Hatoyama, Nakajima, [[Yonezō Maeda]] and [[Toshio Shimada]]. As there was too much antipathy against himself, Hatoyama decided to support [[Fusanosuke Kuhara]] as president. But in March 1939 the opponents of Kuhara and Hatoyama had Nakajima declared president in contravention to party rules. As a result, the party was split between a "reformist faction" led Nakajima and an "orthodox faction" led by Kuhara.<ref name=Fukui></ref>