Japan Lodges Protests Over China, Russia, North Korea Moves as U.S. Alliance Strength Questioned Amid ICC Sanctions

Japan has responded with repeated diplomatic protests to a series of recent actions by China, Russia and North Korea, as questions swirl about the strength of Tokyo’s security partnership with Washington following U.S. sanctions targeting the International Criminal Court.

The incidents come at a moment when Japan is trying to reinforce deterrence across Northeast Asia and the broader Indo-Pacific, where Chinese military activity has intensified, Russia has sought to demonstrate renewed reach in the region, and North Korea continues to advance its weapons programs. But Japanese officials and analysts say Tokyo’s practical options look narrower when the U.S.-Japan alliance is perceived—fairly or not—as less unified on international rules and institutions.

The immediate backdrop is Washington’s decision to impose sanctions related to the ICC, a move that has generated unease among U.S. allies that have traditionally defended the court’s role in enforcing international law. In Tokyo, the concern is not only legal or normative. It is strategic: if the alliance appears divided on global governance, Japan’s ability to rally partners, sustain multilateral pressure, and credibly signal a coordinated response to coercive behavior may be weakened.

In recent days and weeks, Japan has largely been left with formal complaints and condemnations as its main tool—publicly registering opposition while seeking to avoid escalation. That posture reflects both constitutional and political constraints on the use of force, and Japan’s dependence on U.S. military backing for extended deterrence. When the alliance’s cohesion is questioned, the logic goes, Japan has less leverage to shape outcomes beyond diplomatic channels.

The regional pressures are underscored by the increasingly visible alignment among Tokyo’s principal security concerns. A photograph released via Russian state media and carried by Kyodo shows Russian President Vladimir Putin alongside Chinese leader Xi Jinping and North Korean leader Kim Jong Un in Beijing in September 2025—an image that, for Japan and its partners, captures the tightening coordination among the three governments.

For Tokyo, the challenge is managing multiple fronts at once: protecting territorial and maritime interests in the face of Chinese and Russian activity, addressing North Korea’s persistent threat, and sustaining the credibility of deterrence in a landscape where adversaries test for openings. Any perception that Washington is at odds with international institutions like the ICC can complicate coalition-building—especially with countries that see adherence to international law as a foundation of security policy.

Japanese leaders continue to emphasize the centrality of the U.S. alliance while engaging other partners, but the immediate reality has been a reliance on protest notes and statements as incidents unfold. The broader question is whether Japan can translate diplomatic objections into a steadier, more coordinated regional response at a time when its strategic environment is hardening—and when the political optics of alliance unity have become a variable in deterrence itself.

Why it matters

Japan’s security and economic stability depend heavily on credible deterrence in an increasingly contested region, and any doubt about U.S.-Japan alignment can ripple across markets and diplomacy. If Tokyo is seen as limited to protests, Beijing, Moscow and Pyongyang may be tempted to take greater risks. Watch for whether Japan and the U.S. move to publicly reaffirm common positions on international rules while strengthening practical coordination with other regional partners.