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Serving for just over a year, Naoto Kan held the position of Prime Minister of Japan from June 4, 2010, to August 26, 2011. His tenure was marked by significant challenges, including the devastating earthquake and tsunami of March 11, 2011, which led to the Fukushima Daiichi nuclear disaster. Kan's handling of these crises drew both praise and criticism, and he ultimately resigned due to dissatisfaction within his own party.