Yuriko Koike

She served as the Minister of the Environment and Minister of State for Okinawa and Northern Territories Affairs in the Cabinet of Prime Minister Jun'ichirō Koizumi. Along with Satsuki Katayama and Makiko Fujino, Koike became known as one of Koizumi's "assassins" in the 2005 Lower House election, running in Tokyo against an LDP hardliner candidate who opposed Koizumi's policies.[10]

She was appointed the first female Minister of Defense in June 2007 during the first term of Prime Minister Shinzo Abe, but announced in August 2007 that she intended to resign from the post, citing the Aegis classified information leak scandal as a reason.[1] Koike later hinted that the much-publicized fight she had had with Chief Cabinet Secretary Yasuhisa Shiozaki over a vice-minister replacement was the real reason, as the opposition would use that to oppose a bill on Japan's terrorism laws.[11]

On 8 September 2008, she launched her bid to become president of the LDP and became the first woman ever to seek the premiership in Japan's history: "I have received the enthusiastic support of my colleagues. In order to break through the deadlock facing Japanese society, I believe the country might as well have a female candidate. Hillary used the word 'glass ceiling' ... but in Japan, it isn't glass, it's an iron plate. I'm not Mrs. Thatcher, but what is needed is a strategy that advances a cause with conviction, clear policies and sympathy with the people."[12] In the leadership election, held on 22 September, Tarō Asō won with 351 of the 527 votes; Koike placed third with 46 votes.[13]

Having learned an environmental way of life from her own experience of wartime austerities in Egypt,[4] Koike addresses environmental issues. She expressed the idea of introducing a carbon tax in 2005 so that Japan might achieve the goals of the Kyoto Protocol.[22] The next year, she inaugurated the "Mottainai Furoshiki" campaign, which urges shoppers to use furoshiki in place of plastic shopping bags.[23] She is against the use of biofuels made from food crops.[24]

As a conservative nationalist, she belonged to the Diet members' league to support the Japanese Society for History Textbook Reform.[25][26] Koike was one of the five vice secretaries general of the Diet Members' Committee of Nippon Kaigi, the country's largest conservative think tank and the main nationalist lobby, once chaired by Tarō Asō. She is also known to have powerful ties to large conservative political groups, like the Japan Conference.

She was a member of the Diet members' group to promote Yasukuni Shrine visits, led by Yoshinobu Shimamura, and goes to pay her respects to the war dead at the shrine on War-End Day, 15 August, almost every year.[26] Not being able to visit in 2007 due to an official trip to Okinawa, she sent her proxy.[27][28][29]

Her foreign and security policies are often regarded as hawkish.[8][26][30] She suggested that the prime minister revise the interpretation of Article 9 of the Constitution of Japan to enable the government to exercise the right to collective self-defense.[26][31]

She has supported the United States and the War on Terror and opposes the Japanese government's tradition of UN-centered foreign policy.[32] However, she has sent mixed messages to the United States in terms of destabilizing the Middle East with democratization efforts. On the other hand, showing parts of the world how powerful the United States is as an ally is a priority. During the 2008 LDP leadership election, she pledged to make Russia return the four disputed islands to Japan if she was elected as prime minister. Overall, Koike is a diplomatic leader. Back in 2010, she helped strengthen ties between Libya's Muammar Quaddafi and Japan. This led to the creation of the Japan-Libya Friendship Association.[33]

Koike has also actively promoted Japanese pop culture, appearing in cosplay as Sally from Sally the Witch in 2015, and stating during her 2016 Tokyo gubernatorial campaign that she wanted to turn all of Tokyo into an "anime land".[34]

Koike initiated "Jisa Biz" (時差biz) in July 2017 to promote telecommuting and staggered work times to reduce congestion during the morning rush hour in Tokyo.[35]

In 2017, Koike launched and led a new national political party. It was called Kibō no Tō, which means "Party of Hope". Although still Governor of Tokyo, she was the primary leader of this party. It was assumed that this party could have been the main opposition to the LDP. On October 22, 2017, the Party of Hope did not perform as well at the polls as expected. Koike's overarching policies were similar to those of current Prime Minister Shinzo Abe. The policy to set them apart was their differing opinions on nuclear energy. Koike was opposed to it as an advocate of the environment.[36] Koike did not join any successor party to the Party of Hope at its April 2018 dissolution.