Japan’s Prime Minister Takaichi Sanae is heading home from a visit to the United States. She and President Donald Trump held a wide-ranging summit covering Iran, China, economic security and investment into American industries.

The two leaders met on Thursday at the White House. It was her first trip to Washington since taking office last October.

Takaichi conveyed Japan’s views on the situation in Iran and stressed the need for early de-escalation. She said Japan opposes Iran’s attacks on countries in the region and its effective closure of the Strait of Hormuz.

Trump reportedly asked Japan to help ensure that ships can navigate safely in the key waterway. Takaichi says she responded by pointing out there are actions Japan can and cannot take within the framework of domestic laws.

Takaichi and Trump also discussed the economy and economic security. They confirmed that their countries will work together to expand energy production in the United States.

They also agreed to strengthen cooperation in the fields of advanced technologies, including critical minerals and artificial intelligence.

The two sides announced a joint document, which includes more details about an agreement that will see Japan invest 550 billion dollars into the US economy.

Takaichi said the two countries will advance cooperation in a wide range of areas. She also said she will work with Trump to elevate the Japan-US alliance to further heights.

Japanese officials say the summit is widely seen as a success. One source says the talks transpired within the range of what Japan was anticipating.

The source suggested Japan got off to a good start by offering to help tackle rising crude oil prices.

But observers say Japan will likely be required to make more decisions about the unpredictable situation in Iran in the future.

AloJapan.com