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March 27, 2026

JPOSS: March 5 (US), Yuji Idomoto (UCSD), "The Military That Isn't: Legalized Anti-Militarism and Limits of Japan's Defense Policy"

From: Program on U.S.-Japan Relations <usjapan@wcfia.harvard.edu>
Date: 2026/02/24

Dear Colleagues,

 

I hope you have been well this week. We are delighted to invite you to the next JPOSS session:

 

U.S. ET: March 5 (Thu), 8-9 PM

JST: March 6 (Fri), 10-11 AM

Event page and Zoom registration

 

Author & presenter: Yuji Idomoto (UCSD), "The Military That Isn't: Legalized Anti-Militarism and Limits of Japan's Defense Policy"

Discussants: Thomas Berger (Boston University) and Paul Midford (Meiji Gakuin University)

Chair: Amy Catalinac (New York University)

 

Abstract: 

Japan's postwar security identity has been defined by anti-militarism, rooted in Article 9 of the Constitution. Existing scholarship has examined its normative foundations, erosion under regional threats, and persistence despite incremental change, but has paid little attention to its legalized dimension--specifically, the formal designation of the Self-Defense Forces (SDF) as an administrative organ rather than a military. This paper argues that the SDF's legal status imposes distinctive operational constraints: it must function in a policing capacity during peacetime, requires explicit political authorization to engage in combat, and lacks standing rules of engagement and military codes. These limitations hinder crisis response, discipline, and coordination with allies. Drawing on underutilized Japanese-language sources, this study demonstrates how domestic legislation institutionalizes restraint, extending debates on anti-militarism and Japanese defense policy. More broadly, it shows how the legalization of domestic norms can profoundly shape foreign and defense policy.

 

We look forward to your participation!

 

Best wishes,

Amy Catalinac, Christina Davis, Shinju Fujihira, Yusaku Horiuchi, Saori Katada, Phillip Lipscy, and Dan Smith

Approved by ssjmod at 12:31 PM