Tokyo pushes JIP for realistic review of no‑nuclear‑weapon principle

Tokyo, 19 August – The Prime Minister’s Office has pressed the Japan Innovation Party (JIP) to conduct a realistic review of Japan’s long‑standing no‑nuclear‑weapon principle, the third element of the country’s three‑pillars non‑nuclear policy. The principle, which bars the hosting of nuclear weapons on Japanese soil, has been immutable since the post‑war era.

JIP’s June submission to Prime Minister Takahashi proposed a reconsideration of this pillar, arguing that Japan should engage with the United States on extending the United States’ Extended Nuclear Deterrence (END) program and undertake any steps required to augment that security shield.

The proposal drew on confidential consultations held by senior JIP members, including co‑representative Fumitake Fujita, with former defence ministry senior officer Kazuhisa Shimada and former Japan Ground Self‑Defense Force commander Kiyofumi Iwata. Much of Shimada’s viewpoint was incorporated directly into the draft.

The underlying impetus is the United States’ development of a new sea‑based cruise missile, capable of delivering a nuclear payload over a range of 2,000‑2,500 km. Expected to become operational after 2032, the missile‑armed vessel would be able to patrol the seas around Japan and dock at the U.S. naval base in Yokosuka, raising questions about the practicality of the current prohibition.

The PM office, while acknowledging the coalition partner’s concerns, urged JIP to “move one step further” and coordinate closely with Washington to ensure Japan’s defence posture reflects the evolving strategic environment.