Japanese Prime Minister Sanae Takaichi traveled to Washington to reaffirm Tokyo’s alliance with President Donald Trump while confronting growing pressure over the security situation in the Middle East. The visit, intended to cement ties before Mr. Trump’s planned trip to China, became a mix of diplomatic outreach, awkward moments and a significant commercial announcement.
In a roughly 30-minute public Oval Office meeting—largely conducted through an interpreter—Takaichi emphasized Japan’s opposition to Iran’s nuclear ambitions and appealed to Trump’s role as a peacemaker. She warned of “a very severe security environment” and said she believed Trump personally could help advance global peace.
The encounter carried both warmth and tension. Trump praised Takaichi as a “popular, powerful woman,” yet repeatedly returned to probing questions about how much support Japan would provide if the United States took action against Iran. At one point, under persistent questioning from reporters, Takaichi was seen checking her watch.
The most uncomfortable instant came when Trump, explaining why the U.S. had not alerted allies ahead of strikes on Iran, made a joke referencing the 1941 attack on Pearl Harbor: “We didn’t tell anybody about it because we wanted surprise. Who knows better about surprise than Japan? Why didn’t you tell me about Pearl Harbour, OK?” The remark caused a visible reaction from Takaichi—her slight smile disappeared and she raised her eyebrows.
The tone improved later in the evening, when Trump hosted a dinner for the prime minister. Both leaders traded compliments, and Takaichi, speaking in English, declared, “Japan is back,” while an interpreter relayed Trump’s description of the pair as “best buddies.”
Outside the bilateral meeting, leaders of five European countries and Japan issued a joint statement urging Iran to halt attacks on the Strait of Hormuz and calling for measures to keep commercial shipping safe; they said they were prepared to help in appropriate ways, though they did not list detailed commitments.
Trump told reporters he and Takaichi discussed the level of Japan’s support in the regional response and said Japan was “really stepping up to the plate,” without offering specifics. He noted that a substantial portion of Japan’s oil imports pass through the Strait of Hormuz—a point he used in urging Tokyo to contribute more—and referenced the long-standing U.S. military presence and expenditures tied to Japan’s security.
Afterwards, Takaichi said both leaders agreed securing the Strait of Hormuz was essential, and she explained to Trump the constitutional and legal limits that constrain Japanese action. Japan’s post-World War II constitution restricts the use of force to self-defense, and its armed forces are officially designated as the Self-Defense Force, limiting what Tokyo can do without high-level political decisions.
Analysts say the stakes are high for Japan as it seeks to assert a larger role in U.S. Middle East strategy while protecting its interests in other flashpoints such as Taiwan. Kurt Campbell, a former U.S. deputy secretary of state, observed that Takaichi appeared intent on positioning Tokyo as a constructive partner in Washington’s regional planning to gain influence on broader security issues.
Experts note that Japan can contribute in constrained but useful ways—such as minesweeping and continuing the small naval deployments it has long used for anti-piracy operations in nearby waters. However, joining a U.S.-led mission in the Iran confrontation would likely require Tokyo to invoke the high legal and political threshold of collective self-defense, a step that has not been taken before and would be contentious domestically.
Beyond the security discussions, the two countries announced a major commercial energy deal. The White House said U.S.-based GE Vernova Inc. and Japan’s Hitachi Ltd. will build advanced small modular nuclear reactors in Tennessee and Alabama under a reported $40 billion agreement. The administration framed the project as a move to stabilize electricity prices and expand U.S. power generation capacity.
Takaichi, Japan’s first female prime minister and a protégé of former leader Shinzo Abe, is known for conservative views and a strong stance on Taiwan. Her willingness to discuss expanded military roles for Japan has already contributed to friction with China. The Washington visit underscored Tokyo’s delicate balancing act: demonstrating solidarity with the United States on security challenges while operating within domestic legal limits and managing diplomatic fallout with neighboring powers.
