China's Submarine Missile Launch and Coast Guard Standoff Escalate Tensions with Japan

China conducted a rare launch of a ballistic missile from a nuclear‑powered submarine in the Pacific, the first known test of this kind since 1982. Analysts say the missile was likely a JL‑3 with a range of over 10,000 km, signalling a strategic message to the United States and regional neighbours, especially Japan. The United States confirmed it was monitoring the launch, while Japan’s defence ministry said the missile did not cross its airspace or exclusive economic zone. The test highlights Beijing’s effort to complete a tri‑vector nuclear deterrent on land, sea and air, and raises concerns about the transparency of its expanding sea‑based nuclear forces.

In a separate incident, Japan’s Coast Guard ordered two Chinese coast‑guard vessels to leave waters near the disputed Senkaku/Diaoyu islands after they approached a Japanese fishing boat. Japan said the Chinese ships violated international law; the Chinese side claimed the Japanese vessel had entered its waters. The Japanese Coast Guard pledged to “respond calmly and decisively in accordance with international and domestic law” to protect its maritime security. The encounter reflects heightened friction following recent Japanese statements on potential Chinese actions against Taiwan.