• Former U.S. President Donald Trump calls Japan's upcoming general election "very important to Japan's future," amid heightened bilateral tensions in his second term.
  • The snap election, scheduled for early February 2026, follows Prime Minister Sanae Takaichi's dissolution of parliament four months into her term, driven by her high approval ratings and controversial remarks on Taiwan.
  • Economic pressures loom, with Trump imposing tariffs on Japanese imports in January 2025 and pushing for higher Japanese defense spending, risking further strain on the alliance and global supply chains.

A Pivotal Moment for Japan-U.S. Relations

Former U.S. President Donald Trump has injected himself into Japan's political landscape, stating that the results of the country's snap general election this weekend are "very important to Japan's future." This comment comes as U.S.-Japan relations face mounting strain under Trump's second term, marked by unpredictable "America First" demands and escalating trade tensions. Prime Minister Sanae Takaichi called the election after just four months in office, capitalizing on a 70% approval rating and aiming to secure a majority for her Liberal Democratic Party (LDP) despite conservative backlash over her stance on Taiwan.

Efforts to stabilize the alliance have hit a snag, according to people familiar with the matter. In a January 21, 2026, phone call, Takaichi and Trump reaffirmed commitments but highlighted Trump's push for tariffs on Japanese imports and pressure for increased Japanese defense spending. This follows a November 2025 call where they discussed China relations and regional security, with Trump offering vague support amid Takaichi's framing of a Taiwan contingency as a survival threat to Japan—a move that drew Chinese pressure. Without a deal to ease trade frictions, experts warn the economic fallout could deepen, with Trump's tariffs from January 2025 already targeting the U.S. trade deficit and threatening to sever globalized supply chains.

Takaichi's election gambit aims to counter China over Taiwan while weathering Trump's indifference to alliance norms. She has pledged consumption tax cuts to mobilize right-wing populism, potentially boosting short-term domestic spending but risking fiscal strain. Meanwhile, Trump's "pro wrestling" style—exploiting divisions for personal gain—is eroding postwar unity, with Japanese pro-U.S. sentiment, historically at 70-80%, swinging amid his egotistical policies. A February 7, 2025, summit between then-Prime Minister Shigeru Ishiba and Trump set a tense tone, marking 80 years since WWII's end and foreshadowing current crises.

In the broader context, U.S. divisions between prospering tech and finance sectors and declining manufacturing are being leveraged by Trump, possibly accelerating U.S. economic decline via protectionism. Japan's response involves navigating these pressures while stakeholders—from LDP supporters buoyed by Takaichi's momentum to opposition parties facing an LDP majority risk—grapple with alliance erosion. A recent Texas special election upset signals domestic U.S. pushback against Trump, indirectly emboldening Takaichi, but the long-term outlook remains uncertain. Experts predict that if Trump persists, it could fuel Japanese nationalism and a drift from U.S. reliance, reshaping diplomacy in the Indo-Pacific.

Correction: An earlier version misstated the timing of Trump's tariff imposition; it occurred in January 2025, not 2026.