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Why did Abe Shinzo resign as Japan’s prime minister in 2020?

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In August 2020, Shinzo Abe announced his resignation as prime minister of Japan due to a recurrence of ulcerative colitis, a chronic inflammatory bowel disease.12

Following his announcement, he remained in office in a caretaker capacity until his successor was chosen. On September 14, 2020, Yoshihide Suga—who had served as Abe’s chief cabinet secretary—was elected as the new leader of the Liberal-Democratic Party (LDP) and formally succeeded Abe as prime minister two days later.12