--- title: "China Squeezes Japan With Rare-Earth Curbs and Sea Patrols" description: "Beijing has tightened rare-earth export controls and stepped up coast guard and military operations near disputed islands in a sustained pressure campaign against Tokyo — an escalation analysts call the most serious rupture in China-Japan relations in years, traced to a single statement about Taiwan." category: "World" category_url: https://herald.la/category/world author: "Anjali Rao" published: 2026-06-30T09:48:00.000Z updated: 2026-06-30T09:48:00.000Z canonical: https://herald.la/article/china-squeezes-japan-with-rare-earth-curbs-and-sea-patrols tags: ["China", "Japan", "Senkaku Islands", "rare earths", "Taiwan", "East China Sea"] --- # China Squeezes Japan With Rare-Earth Curbs and Sea Patrols Beijing has tightened rare-earth export controls and stepped up coast guard and military operations near disputed islands in a sustained pressure campaign against Tokyo — an escalation analysts call the most serious rupture in China-Japan relations in years, traced to a single statement about Taiwan. A diplomatic rupture between Asia's two largest economies has hardened into a test of how far Beijing will go to punish a neighbor over Taiwan. ## A remark that lit the fuse The crisis traces to November 2025, when Japanese Prime Minister Sanae Takaichi told parliament that a Chinese attack on Taiwan could amount to "an existential crisis for Japan," language implying Tokyo might intervene militarily. Beijing reacted furiously. China's Foreign Ministry said the remarks "blatantly interfered in China's internal affairs," and a Chinese diplomat in Osaka drew a formal Japanese protest for a violent personal threat against the prime minister. Tokyo refused to retract the comment, calling it consistent with longstanding policy. ## Pressure at sea and in the air China's response has played out across the East China Sea. Chinese coast guard vessels have repeatedly patrolled the waters around the Senkaku Islands — uninhabited outcrops that Japan administers and China claims as the Diaoyu Islands — and Chinese and Japanese aircraft have had tense encounters near the disputed chain, [the Washington Post reported](https://www.washingtonpost.com/world/2026/01/09/china-japan-rare-earths/). China has staged naval exercises near Japan's southwestern islands and, at moments, coordinated long-range flights with Russia, underscoring the alignment between Moscow and Beijing. Tokyo has also said it detected a Chinese survey vessel operating in its waters near the Senkakus. Beijing frames the activity as a lawful defense of its sovereignty; Japan calls it intimidation. ## The rare-earth lever The sharpest weapon has been economic. Beginning in early 2026, China imposed export restrictions targeting several medium and heavy rare-earth elements — materials such as dysprosium and terbium that are essential to magnets, electronics and defense hardware — and added Japanese companies to export-control lists, [according to the Center for Strategic and International Studies](https://www.csis.org/analysis/chinas-rare-earth-campaign-against-japan). China has supplied the great majority of Japan's rare-earth imports, so even partial cutoffs ripple through Japanese industry; [Defense News reported](https://www.defensenews.com/global/asia-pacific/2026/01/07/japan-decries-chinese-export-restrictions-that-could-cripple-defenses/) that Tokyo warned the curbs could hamper its defense production. Japanese automakers reported supply disruptions, and a sharp drop in Chinese tourism added to the economic chill. Japan's Foreign Ministry called the export ban "unacceptable and deeply regrettable." ## Tokyo's response, and Washington's Japan is not standing still. It has increased its coast guard budget, moved to deploy long-endurance surveillance drones over the Senkakus, and accelerated efforts to source rare earths elsewhere — deepening ties with Australian producers and building magnet and processing capacity outside China. The United States has reaffirmed that the Senkaku Islands fall under its mutual-defense treaty with Japan and flew bombers alongside Japanese jets in a show of alliance solidarity, while the State Department called Beijing's actions unhelpful to regional stability. ## What it signals Analysts say the episode marks a qualitative shift: by explicitly tying mineral access to Taiwan policy, Beijing is signaling that any country seen as backing Taiwanese autonomy could face economic consequences well short of war. For now, Beijing is urging Tokyo to "change course," and Japan is refusing to budge — leaving little visible off-ramp as the standoff between the two powers settles into a longer contest. ## Sources - [China's rare-earth campaign against Japan](https://www.csis.org/analysis/chinas-rare-earth-campaign-against-japan) - [Japan decries Chinese export restrictions that could cripple defenses](https://www.defensenews.com/global/asia-pacific/2026/01/07/japan-decries-chinese-export-restrictions-that-could-cripple-defenses/) - [Why China is taking on Japan in a new fight over rare earths](https://www.washingtonpost.com/world/2026/01/09/china-japan-rare-earths/)