Defending the Japanese State: Structures, Norms, and the Political Responses to Terrorism and Violent Social Protest in the 1970s and 1980s. By Peter J. Katzenstein and Yutaka Tsujinaka. Ithaca, N.Y.: East Asia Program, Cornell University, 1991. xi, 217 pp. - Japan's National Security: Structures, Norms and Policy Responses in a Changing World. By Peter J. Katzenstein and Nobuo Okawara. Ithaca, N.Y.: East Asia Program, Cornell University, 1993. xii, 288 pp.