Japan facing the conflict in Iran: a communication strategy under constraint | FRS note | Foundation for Strategic Research | FRS

Stock image : Wikipedia

Introduction

Heavily dependent on energy supplies from the Persian Gulf and a major strategic ally of the United States in Asia, Japan is adopting a measured stance in the face of the conflict in Iran. Caught between sometimes contradictory imperatives, it has narrow room for diplomatic maneuver. In this context, the communication of the Japanese authorities constitutes a central lever for risk management.

Based on restraint, de-escalation and maintaining dialogue, this communication reflects a search for balance between energy dependence, security alliance and attachment to multilateralism.

However, the intensification of regional tensions and Washington’s growing expectations in terms of securing the Strait of Hormuz are testing this approach and revealing its weaknesses. Faced with these constraints, Japan is gradually led to resort to a form of ambiguity in its positioning. More explicit communication therefore appears to be an essential lever for strengthening the international scope of its action.

Restraint communication in the service of strategic balance

Faced with the conflict in Iran, Tokyo favors cautious communication, focused on restraint. Official speeches reflect a constant desire to contain tensions and avoid any polarization. Thus, Tokyo refrains from any explicit designation of responsibility in order to limit the risks of escalation while preserving its capacity for dialogue with all parties.

The official discourse emphasizes regional stability, the search for diplomatic solutions and economic security, placing the crisis in a perspective of collective management. The use of a technical lexical register – maritime safety (æµ·æ´‹å®‰å…¨ä¿ ç«), kaiyô anzen hoshô), the stability of the energy supply (エムルギー㠮安定供ç¦ã ®ç¢oä¿ , enerugi no anteikyôkyû no kakuho) – is part of this strategy aimed at neutralizing the political dimension of the conflict. The geopolitical issues are thus reformulated in terms of global economic stability, while the security of maritime routes is presented as a collective issue. The Strait of Hormuz is assimilated To a “global public good”.

This position is part of a resolutely multilateral framework: Japan reaffirms its attachment to international standards and favors diplomatic channels. Alignment with the G7 and participation in joint initiatives on maritime security reinforce its image as a responsible actor engaged in collective crisis management.

This approach, however, remains constrained by the country’s structural dependencies. More than 90% of Japan’s oil imports pass through the Middle East, notably via the Strait of Hormuz, making regional stability vital. Since the 1970s, following the first oil crises, this energy dependence led Japan to establish specific relations with Iran, based on pragmatism and the security of its supplies. Added to this is the central role of the alliance with the United States in an environment marked by tensions with China and North Korea. In this context, communication constitutes an adjustment instrument aimed at reconciling alignment with Washington and the continuity of relations with actors in the Middle East.

From balance to ambiguity: the limits of constrained autonomy

If this strategic balance remains effective for the preservation of national interests, the conflict in Iran reveals its fragilities by acting as a catalyst. The deterioration of the security context and growing American pressures are putting this balance under strain and gradually leading Japan to resort to a form of ambiguity.

With regard to Iran, the Japanese strategy consists of maintaining high-level dialogue channels and the absence of frontal condemnation. This specificity gives Japan a unique position within the G7, allowing it to dialogue without disruption with antagonistic actors while obtaining concrete guarantees for the security of its ships and its nationals. The continuity of official exchanges illustrates this desire to preserve operational lines of communication, including in times of tension. Thus, in an interview with Kyodo News, Iranian Foreign Minister Seyed Abbas Araghchi expressed his desire for cooperation with the Japanese authorities at the end of March. Likewise, Iranian President Masoud Pezeshkian had a telephone conversation with Prime Minister Takaichi Sanae following the April 8 ceasefire. At the same time, Tokyo avoids putting forward too visible bilateral initiatives so as not to deviate from the collective line of the G7. The Japanese authorities are also tempering expectations relating to a possible direct assumption of a mediation role. If this caution helps preserve Japan’s room for diplomatic maneuver, it can also be perceived as a lack of initiative – a criticism that is frequently leveled at it and from which it is today seeking to free itself.

At the same time, Japan refrains from any explicit criticism of the United States in order to preserve the strength of the alliance. However, the absence of a clear position regarding the American intervention in Iran, carried out without prior consultation with allies and outside the framework of the United Nations, contradicts its discourse in favor of international law in other contexts, such as Ukraine or the China Sea, and its active support for the vision of a “free and open Indo-Pacific”. This restraint extends to certain American military operations which have provoked critical reactions on the international scene, maintaining the ambiguity of the Japanese positioning and fueling perceptions of “double standards”.

American requests concerning the security of the Strait of Hormuz illustrate the complexity of this balance. They confront Tokyo with a delicate trade-off between allied credibility and constitutional constraints, while reviving debates relating to the commitment of the Self-Defense Forces. The statements by the American Ambassador to the United Nations, Mike Waltz, following the summit meeting between Japan and the United States on March 19, 2026, evoking a possible engagement of Japanese troops, highlighted the sensitivity of these issues. Faced with these pressures, the Japanese authorities favor cautious and dilatory responses, insisting on the legal framework and the absence of a formal request from the United States, without fully explaining their security constraints or their intentions.

Thus, if ambiguity constitutes an instrument of diplomatic flexibility, it also tends to weaken, in the longer term, the readability and credibility of the Japanese positioning. This tension underlines the need to rethink the methods of expression of Japanese strategy in order to preserve its coherence.

Clarifying the balance: towards more explicit communication

In this context, the challenge is not to call into question Japan’s strategic balance, but to improve its readability. Despite the constraints weighing on its action, Japan has significant levers of influence. Its image as a non-interventionist power, its economic credibility and its ability to dialogue with actors with divergent interests make it a potential facilitator in regional crises, particularly when its interests are directly at stake.

Its diplomatic network, in the Indo-Pacific as in the Middle East, and its engagement in multilateral forums reinforce its legitimacy on maritime security issues. Thus, Japan supported the initiative to establish « “secure maritime corridors” in the Strait of Hormuz which was adopted by the International Maritime Organization (IMO). He also raised awareness among partners in the Indo-Pacific, such as the Marshall Islands, Malaysia and the Philippines, about the issues linked to the strait, and developed the “POWERR Asia” system, accompanied by financial aid of around $10 billion, in favor of of the energy resilience of the Asian region.

Certain internal and external dynamics call for a more assertive diplomatic commitment. Internally, the Japan-Iran friendship group in the Japanese Diet, chaired by former Prime Minister Kishida Fumio, supports this orientation. This also finds a favorable response among international partners, in a context where expectations regarding actors capable of maintaining open communication channels remain high. President Macron’s visit to Tokyo at the end of March, largely devoted to issues in the Middle East, is an illustration of this. These elements reflect the existence of a potential for influence that is still partially under-exploited.

More explicit communication, making it possible to clarify the terms of this balance and the constraints which underlie it, would strengthen the coherence and readability of Japanese action. By more clearly assuming its role as facilitator, Tokyo could transform its constrained position into real strategic leverage.

Therefore, an evolution towards clearer and more assertive communication appears to be a determining condition for Japan’s capacity to assert itself sustainably on the international scene, both in the Middle East and in other theaters, particularly in the Indo-Pacific.