The Koizumi Administration refers to the government led by Junichiro Koizumi, who served as the Prime Minister of Japan from 2001 to 2006. His tenure is noted for significant economic reforms aimed at revitalizing Japan's stagnant economy, including privatizing the Japan Post and implementing structural changes in various sectors. Koizumi was known for his charismatic leadership style and his focus on addressing issues such as bureaucratic inefficiency and public sector reform. His administration also emphasized Japan's role in international affairs, particularly in relation to the United States and the Iraq War, where Japan provided humanitarian assistance.