Yukio Hatoyama is a Japanese politician who served as the Prime Minister of Japan from September 2009 to June 2010. He is a member of the Democratic Party of Japan and is known for his efforts to reform the country's political landscape. Hatoyama was born on February 11, 1947, into a prominent political family, which influenced his career in politics. During his time in office, Hatoyama focused on various issues, including economic recovery and social welfare. He aimed to reduce Japan's reliance on the United States for military support and sought to improve relations with China and South Korea. His tenure was marked by challenges, including political infighting and public dissatisfaction, leading to his resignation.