Tensions between Japan and China have intensified sharply, prompting Tokyo to issue a safety warning to its citizens living in China. The latest diplomatic flare-up stems from worsening disagreements over Taiwan, pushing the already fragile Sino-Japanese relationship into deeper uncertainty.
The conflict escalated after remarks by Japanese Prime Minister Sanae Takaichi during a parliamentary session. Takaichi suggested that a Chinese military action against Taiwan could be considered a “survival-threatening situation” for Japan. Under Japan’s 2015 security legislation, such a designation could open the door for the Japan Self-Defense Forces to engage in collective self-defense operations.
China reacted with strong condemnation, accusing Japan of “reckless interference” in its internal affairs. Beijing maintains that Taiwan is a breakaway province and has not ruled out the use of force to achieve reunification. Takaichi’s remarks were viewed as a direct challenge to Beijing’s long-held position.
The diplomatic fallout quickly intensified. China summoned Japan’s ambassador and issued a travel advisory urging Chinese citizens to reconsider trips to Japan, citing unspecified safety concerns. This move poses potential risks for Japan’s tourism and retail industries, which rely heavily on Chinese visitors. Chinese state media also amplified criticism, and a Chinese diplomat briefly posted a hostile message directed at Prime Minister Takaichi before deleting it.
In response, the Japanese embassy in Beijing issued an alert advising Japanese nationals in China to exercise heightened caution, stay aware of their surroundings, and avoid large gatherings or areas known to be frequented by Japanese citizens. Tokyo fears that rising political hostility could trigger public backlash against its citizens in mainland China.
The diplomatic strain unfolds against the backdrop of mounting Taiwan Strait tensions. Japan’s geographic proximity to Taiwan, particularly the southwestern islands, places it at direct risk should any conflict erupt. Takaichi’s explicit comments signal a departure from Japan’s decades-long approach of strategic ambiguity and point toward a more assertive regional security stance.
With planned diplomatic engagements being delayed or canceled, both nations appear locked in a worsening cycle of accusation and retaliation. Analysts warn that unless both sides take steps to reduce tensions, long-term damage to Sino-Japanese relations may become difficult to reverse.

