Japan Rewrites Its China Policy at Global Summit

Japan showed up to a major international meeting in Canada with two things on its agenda: a plan to help Asian countries secure reliable energy, and a shift in how it officially talks about China. The second one may matter more than anyone expected.

Building an Energy Safety Net

Prime Minister Sanae Takaichi met with leaders from the United Kingdom and Italy on the margins of the G7 summit in Kananaskis. In those private conversations, she promoted something called POWERR Asia — a framework Japan is building to help countries across the Indo-Pacific region coordinate their energy supplies and make sure power stays reliable even when global supply chains are disrupted.

Why meet with Britain and Italy? Both countries import most of their energy from abroad and are heavily invested in natural gas. They care about keeping energy flowing in the Indo-Pacific. By pitching POWERR Asia to them first, before raising it with all seven countries, Japan was testing the ground — a careful diplomatic move that makes it less likely any country will block the idea when it comes up formally.

The energy initiative also serves Japan's own needs. Japanese voters have been wary of nuclear power since a major accident in 2011. The country depends heavily on importing coal and gas. So by helping other nations think about energy security, Japan gets to play a leadership role without first having to solve its own energy debates at home.

The Bigger Shift on China

Behind the energy talks, something more important was happening. Japan is about to publish a document called the 2026 Diplomatic Bluebook — basically a yearly instruction manual for how Japan's government thinks about global relationships. When it comes out next month, it will drop a phrase that has described Japan's relationship with China for years: "most important."

China has long been called Japan's most important neighbor in this official document. That language might sound minor, but it shapes how every Japanese government ministry, every business, and other countries understand where Japan stands. Dropping it signals a real change in strategy.

This shift did not come out of nowhere. Relations with China got much worse in late 2025. Prime Minister Takaichi made public statements about Taiwan that angered Beijing. China responded by refusing to release new Japanese films — a pointed move, since Japanese movies are hugely popular in China. Japan's government then told its citizens living in China to be extra careful and avoid crowds, the kind of warning normally reserved for war zones or major civil unrest. That was a clear signal things had gotten dangerous.

For years, Japan's leaders had carefully kept the "most important" language even as tensions rose over disputed islands, military activity, and concerns about economic pressure from China. But the cost of maintaining that friendly framing now outweighs the benefits. Japan is formally admitting that China is no longer its most important relationship.

The Tricky Balance Ahead

Here is what makes this moment complicated: Japan is trying to build a new energy partnership across Asia at the same time it is openly downgrading its relationship with China — the region's largest and most powerful country. That is a difficult balance to strike.

When Japan pitches POWERR Asia to Southeast Asian countries, some of those nations might wonder: Is this really just about energy security, or is it a quiet way to reduce China's power over the region? Many Southeast Asian countries do significant business with China and have tried hard not to take sides in tensions between larger powers. Japan will need to be careful about how it explains the initiative so it does not look like it is pushing countries to choose.

For Japan's Western allies like the United States and European countries, the shift on China language looks like alignment — they have all been rethinking how much they depend on China for trade, technology, and everything else. But whether the G7 countries will actually coordinate a unified China policy, or if they will each make their own moves separately, is still an open question.