JAPAN PERSPECTIVE

Tokyo, June 22, 2026. For an archipelago that imports nearly all its energy, every development around the Strait of Hormuz carries immediate resonance. The 14-point memorandum of understanding signed in Switzerland and the 60-day roadmap toward a final accord are thus being monitored in Tokyo with cautious relief, but without euphoria. Tensions persist, and recent history has taught Japan not to confuse a statement of principles with durable peace.

According to a Kyodo News poll released Sunday, June 22, Prime Minister Sanae Takaichi's cabinet approval rating fell to 55.8 percent, its lowest level since taking office last October, partly because of economic uncertainties tied to Middle East conflict. In May, 70.6 percent of Japanese respondents said they were concerned about naphtha supply disruptions—a feedstock essential to plastics production—underscoring how the US-Iran conflict has translated into very concrete terms for Japanese households and industry.

The Strait of Hormuz question has also opened a delicate debate over the role of the Japan Self-Defense Forces. According to the same survey, 54.7 percent of respondents believe it is unnecessary to send JSDF personnel to the strait to escort commercial vessels, while 36.6 percent support deployment. This divide reflects permanent tension between economic imperatives and constitutional constraints: Japan's postwar pacifist constitution strictly limits military operations abroad, including mine-clearing operations that some argue are indispensable for resuming normal traffic.

Regarding the negotiations themselves, Japanese media outlets relay apparent contradictions from the US delegation. Japan Today reports that Donald Trump threatened to strike Iran "very hard, even harder" even as Vice President JD Vance led talks at Bürgenstock, while simultaneously calling the negotiations "historic." The Iranian delegation left the room following this public threat, while the IRGC had announced the strait closure the day before—though US Central Command indicated that 55 merchant vessels transited on Saturday, carrying over 17 million barrels.

Japan Today also notes that Trump raised the possibility of a US toll on passage through the strait "for services rendered as a guardian angel of Middle East nations" if the final accord were not concluded—a prospect that can only worry Tokyo, whose tankers depend on this corridor. The 60-day roadmap leaves open the question of reliability for an accord whose principal signatory is issuing threats simultaneously to its signature.

For Japan, the priority is less to debate diplomatic language than to secure continuity of energy flows. Progressive normalization—if it holds—would represent considerable relief for an economy already strained by imported inflation.