The book presents an analytical framework to explore the prime minister's role in Japan's political decision-making, highlighting the challenges posed by interagency rivalry and intraparty factions. These dimensions of factionalism create obstacles during major policy resolutions. However, it also demonstrates that, despite these challenges, the prime minister can still achieve effectiveness in governance.
Tomohito Shinoda tracks slow yet steady changes in the operation of and tensions between Japan's political parties and the public's behavior in Japanese elections, as well as in the government's ability to coordinate diverse policy preferences and respond to political crises.
Japan's policymaking strategy in foreign and defense affairs changed dramatically in 2001 after Prime Minister Junichiro Koizumi took the helm of the long-ruling Liberal Democratic Party. Following a series of bland and short-lived prime ministers, Koizumi's infusion of fresh energy into a tired and opaque party has been compared with Tony Blair's successful revamping of New Labour in the U.K. Koizumi, however, had a weak power base in the party and limited diplomatic experience. How, then, was he able to exercise leadership?