Chinese Consul General in Osaka Xue Jian (薛劍) on Saturday posted a chilling message on X: “the dirty neck that sticks itself in must be cut off,” in reference to Takaichi’s remark to Japanese lawmakers that an attack on Taiwan could threaten Japan’s survival.

The post, which was later deleted, was not an isolated outburst. Xue has also amplified other incendiary messages, including one suggesting that Japan would provoke an immediate Chinese retaliation if it attacked Chinese forces.

At the heart of the diplomatic firestorm lies Taiwan, a democracy that China claims as its own and Japan increasingly sees as a strategic partner.

Takaichi’s comments reflect a growing consensus in Tokyo: A Chinese invasion or blockade of Taiwan would not be a distant regional issue, but a direct threat to Japan’s national security. Japan’s southwestern islands lie perilously close to Taiwan, and any conflict could disrupt sea lanes, endanger Japanese citizens and destabilize the region.

However, Beijing views such statements as provocations. The violent rhetoric from Xue signals a shift from diplomatic rebuttal to personal intimidation — a tactic that undermines norms of international conduct and reveals the depth of China’s sensitivity on Taiwan.

The episode exposes the erosion of civility in international relations, especially when authoritarian regimes feel cornered. Threatening a foreign leader with decapitation is not just grotesque — it is a symptom of a deeper malaise: The weaponization of language to silence dissent and intimidate democratic actors.

It also raises questions about the limits of diplomatic immunity and accountability. Should a diplomat who issues violent threats remain in their position? Should host countries tolerate such behavior under the guise of free speech or cultural misunderstanding?

Japan’s response has been measured, but firm. Yet the international community must go further. Violent threats against elected leaders cannot be normalized. As Taiwan’s future hangs in the balance, democracies must stand together — not just in defense of territory, but of dignity, dialogue and the rule of law.

Khedroob Thondup is a former member of the Tibetan parliament-in-exile.