Xi’s Fury Over Japan at the Trump Summit: Remilitarisation Warning or Beijing’s Taiwan Fear Showing?
Financial Times reporting says Xi Jinping became heated over Japan’s defense build-up during his summit with Trump. The Japan question may be becoming the Taiwan question.
The most heated moment of the Trump-Xi summit may not have been about tariffs, Iran or chips. According to Financial Times reporting, Xi Jinping became visibly animated when criticizing Japanese Prime Minister Sanae Takaichi and Japan’s rising defense posture. U.S. officials were reportedly surprised because Japan had not been a central topic in pre-summit talks. That surprise matters. It suggests Beijing came with a message it wanted Washington to hear.
China’s accusation is “remilitarisation.” Beijing sees Japan’s defense spending, missile procurement, Taiwan comments and closer ties with the U.S., South Korea, Australia and the Philippines as signs that Tokyo is abandoning postwar restraint. For China, this is not merely about military balance. It touches history, nationalism and the memory of Japanese imperial violence. Any Japanese defense expansion can be framed domestically as a warning that history is returning.
Japan sees the same reality through a different lens. North Korea has nuclear weapons and missiles. China’s navy and air force operate more aggressively around Japan’s waters and airspace. Russia and China have increased military coordination. Taiwan’s security has become directly linked to Japan’s own defense planning. From Tokyo’s perspective, rearmament is not nostalgia. It is survival in a harsher neighborhood.
Trump reportedly responded by saying Japan had to take a more assertive security stance because of North Korea. That answer may have avoided the most sensitive part: China. For Japan, China is the central strategic concern. For Trump, saying that directly in front of Xi may have complicated the summit. By naming North Korea instead, he gave Japan some defense while not fully confronting Beijing.
Xi’s intensity reveals something deeper: Japan’s role in any Taiwan crisis is now a major Chinese concern. If conflict erupts over Taiwan, U.S. bases in Japan would be crucial. Japanese territory, logistics, air defense, ports and intelligence networks could shape the outcome. A more capable Japan makes Chinese planning harder. Beijing may therefore want to pressure Washington to restrain Tokyo before a crisis.
The Takaichi factor matters too. Japan’s prime minister has taken a more assertive tone on Taiwan and defense. For Beijing, a Japanese leader who openly connects Taiwan’s security to Japan’s national survival crosses a psychological line. It raises the prospect that Japan will not remain passive in a Taiwan conflict.
The historical argument is powerful but selective. China invokes Japan’s past militarism to challenge current defense growth. Japan invokes today’s Chinese military expansion to justify its own. Both are speaking to real fears. Both also use history strategically.
The bigger risk is escalation through perception. China sees defensive preparations as remilitarisation. Japan sees Chinese pressure as proof it needs stronger defense. The United States encourages allies to do more, then worries when their actions provoke Beijing. Each side believes it is reacting. Together they create a spiral.
The headline says Xi blasted Japan in front of Trump. The deeper question is why Japan triggered such heat at a summit supposedly focused on U.S.-China management. The answer may be that Beijing increasingly sees Japan not as a secondary actor, but as a frontline state in the next Asian security crisis.
If Taiwan is the match, Japan may be the fuel Beijing fears most.