Speaking on a Fuji TV programme, Motegi said such a move would be contingent on a “complete ceasefire” and the presence of naval mines obstructing navigation. He described the scenario as hypothetical, adding that minesweeping could be considered if maritime protection conditions required it.

Japan’s ability to deploy forces overseas is restricted by its postwar pacifist constitution, though security legislation enacted in 2015 allows the use of the Self-Defense Forces if an attack on a close partner threatens Japan’s survival and no alternative measures are available.

Motegi said Tokyo has no immediate plans to negotiate specific arrangements for stranded Japanese vessels to transit the waterway, stressing instead the importance of restoring conditions that allow safe passage for all ships.

Japan relies on the Strait of Hormuz for roughly 90% of its oil imports, underscoring the strategic importance of the route. The strait has been largely closed by Iran during the ongoing conflict, now in its fourth week, contributing to a surge in global oil prices.

The disruption has prompted Japan and other countries to release oil from strategic reserves to stabilise supply.

Iranian Foreign Minister Abbas Araqchi said on Friday he had discussed with Motegi the possibility of allowing Japanese-linked vessels to pass through the strait, according to Japan’s Kyodo news agency.

Meanwhile, U.S. President Donald Trump met Japanese Prime Minister Sanae Takaichi in Washington on Thursday and urged Japan to increase its role in efforts to reopen the waterway. Takaichi said she briefed Trump on the scope of support Japan could provide under its legal framework.

Speaking on a Fuji TV programme, Motegi said minesweeping could be an option if naval mines obstruct shipping lanes following a “complete ceasefire,” stressing that any such step would depend on conditions stabilising in the waterway, a conduit for roughly a fifth of global oil shipments.

Japan’s potential involvement would be constrained by its postwar pacifist constitution, which restricts military activity abroad. However, security legislation enacted in 2015 allows overseas deployment of the Self-Defense Forces if a crisis threatens Japan’s survival and no alternative measures are available.

Motegi said Tokyo had no immediate plans to pursue arrangements to secure passage specifically for Japanese vessels, but emphasised the importance of restoring safe navigation through the strait. Japan relies on the route for around 90% of its oil imports, leaving it highly exposed to disruptions.

The near-closure of the Strait of Hormuz amid the ongoing conflict has contributed to a surge in global oil prices, prompting Japan and other countries to release crude from strategic reserves.

Iranian Foreign Minister Abbas Araghchi told Japan’s Kyodo news agency he had discussed with Motegi the possibility of allowing Japan-linked vessels to transit the strait.U.S. President Donald Trump has urged allies, including Japan, to increase their role in securing the waterway, though Tokyo has so far signalled limits based on its legal framework.

Prime Minister Sanae Takaichi said she had briefed Trump on the scope of support Japan could provide under domestic law.

Separately, Motegi said one of two Japanese nationals detained in Iran had been released on Wednesday and would return to Japan. He said the release followed repeated diplomatic representations to Tehran, while confirming that a second Japanese citizen remains in custody.

Speaking at the Reagan National Defense Forum in Simi Valley, he stressed that every military action must align with national security priorities and legal standards.

Hegseth said he stood by the original decision to neutralize the vessel due to intelligence indicating a significant drug-trafficking threat.

He emphasized that combating illegal narcotics remains a key priority for safeguarding American communities and strengthening regional stability.

He explained that he viewed the initial strike and then left to attend a scheduled meeting, underscoring that operational command remained in the hands of on-site military leadership.

The defense chief framed the issue as part of ongoing efforts to modernize command structures and strengthen real-time communication during maritime operations.

Officials from the administration later clarified that the additional action taken that day resulted from the field commander’s tactical assessment of potential narcotics remaining on the wreckage.

They noted that rapid decisions in dynamic maritime environments are driven by the need to prevent illicit substances from reaching criminal networks.

Hegseth reaffirmed that the matter is under internal review, including discussions about whether the full video of the operation will be released.

He highlighted the importance of responsible transparency, ensuring that sensitive material is handled in a way that reinforces public trust and protects military personnel.

The September 2 action was the first in a series of maritime counter-narcotics operations conducted across the southern Caribbean and eastern Pacific.

These missions form part of a broader strategic initiative to disrupt transnational criminal organizations that threaten regional security.

Officials cited the campaign as a significant effort to safeguard coastal communities, strengthen international cooperation and reduce the movement of illegal drugs into the United States.

They emphasized that maritime interdiction requires precision, discipline and close adherence to legal and ethical frameworks.

The imagery shown to lawmakers raised questions about the conduct of the second strike, prompting discussion about the standards set out in the Defense Department’s Law of War Manual.

The manual outlines clear protections for individuals who are incapacitated or shipwrecked and not engaged in hostilities.

Hegseth acknowledged the importance of these legal safeguards and said that reviews are an essential part of ensuring military actions remain aligned with U.S. values.

He stressed that the military’s credibility is strengthened when policies prioritize humanitarian principles alongside national defense.

Administration officials framed the broader anti-drug strategy as part of an international effort to curb dangerous cartels and protect civilian populations affected by illicit trafficking routes.

They highlighted ongoing diplomatic, intelligence and enforcement partnerships with regional governments aiming to improve maritime security.

The defense secretary noted that conversations with lawmakers and oversight bodies are a normal part of democratic governance.

He welcomed constructive dialogue as a way to refine operational protocols and support service members who carry out demanding missions.

Hegseth expressed appreciation for the men and women of the armed forces whose work forms a central part of national security.

He emphasized that their commitment to lawful conduct and operational excellence remains a cornerstone of U.S. defense policy.

As reviews continue, officials reaffirmed that the United States remains dedicated to transparency, accountability and strong cooperation with international partners in combating transnational threats.

They added that upcoming evaluations will help shape future operations to ensure they align with both strategic priorities and humanitarian obligations.