WASHINGTON - US President Donald Trump greeted Japan's Prime Minister Sanae Takaichi warmly at the White House on March 19 and said he believed Japan was "really stepping up to the plate" on Iran, unlike the NATO alliance.
Mr Trump has lashed out at allies for their lukewarm support for the US-Israeli military campaign and said the US doesn't need any help.
However, he is still pushing for more ships to clear mines and escort tankers through the Strait of Hormuz, largely closed by Iran in the conflict.
Ahead of the meeting, Japan joined leading nations in Europe in a joint statement, saying they would take steps to stabilise energy markets and were ready to join "appropriate efforts" to ensure safe passage through the Strait.
Mr Trump hailed Ms Takaichi's election victory in February as "record setting" as he welcomed her at the Oval Office.
He said they would "be talking about trade and many other things," including Iran.
"We've had tremendous support and relationship with Japan on everything, and I believe that based on statements that were given to us yesterday, the day before yesterday, having to do with Japan, they are really stepping up to the plate... unlike NATO," Mr Trump said.
He said he expected Japan to step up given the support the US gave the country and the tens of thousands of troops it has stationed there.
"We don't need much; we don't need anything," Mr Trump said. "We don't need anything from Japan or from anyone else. But I think it's appropriate that people step up."
Ms Takaichi told Mr Trump she had "brought specific proposals to calm down the global energy market" and said Iran must never be allowed to obtain a nuclear weapon.
Ms Takaichi condemned Iran's attacks in the Strait of Hormuz and said she believed only Mr Trump could achieve peace. She also said the global economy was about to take a hit due to the turmoil in the Middle East.
Ms Takaichi's long-scheduled White House visit has been aimed at burnishing the decades-old security and economic partnership between Washington and its closest East Asian ally, but there have been concerns among Japanese officials that Mr Trump will press her to do more than she is able to on Iran.
Ms Takaichi has sought to move Japan away from a pacifist constitution imposed by Washington after World War II, but with the Iran war unpopular at home, she has so far not offered to assist in clearing the Strait of Hormuz.
US Treasury Secretary Scott Bessent earlier said he would expect that Japan, which gets 95 per cent of its crude oil supplies from the Gulf, would want to ensure its supplies are safe.
Mr Bessent told Fox Business Network Japan's navy has some of the best minesweepers and mine-detection capabilities. He said he believed Japan would release more of its large petroleum reserve to supply the strained oil market.
Ms Takaichi told the Japanese Parliament on March 16 that Japan had received no official request from the US on Iran but was checking the scope of possible action within the limits of its constitution.
Shortly before heading to Washington, Ms Takaichi posted on X that she would discuss "the increasingly tense situation surrounding Iran."
She also said she would "confirm with President Trump the unwavering bond between Japan and the United States and further promote cooperation across a wide range of areas, such as security and the economy."