Ichiro Hatoyama

Ichiro Hatoyama became Prime Minister of Japan on December 10, 1954, succeeding Shigeru Yoshida. His appointment followed the merger of conservative parties to form the Liberal Democratic Party (LDP) in 1955. Hatoyama's government focused on constitutional revision and normalization of relations with the Soviet Union.

Hatoyama played a key role in merging the Liberal Party and the Japan Democratic Party to form the Liberal Democratic Party (LDP) on November 15, 1955. The LDP dominated Japanese politics for decades. Hatoyama became the first LDP prime minister, consolidating conservative power.

Hatoyama signed the Soviet-Japanese Joint Declaration on October 19, 1956, ending the state of war between Japan and the Soviet Union. The declaration restored diplomatic relations and paved the way for Japan's entry into the United Nations. However, it did not resolve the territorial dispute over the Kuril Islands.