Indo-Pacific — 2026-07-15

China Deploys Coast Guard East of Taiwan and Test-Fires Submarine ICBM in New Long-Term Deterrence Strategy

BLUFBeijing is converting episodic coercion into standing posture across the western Pacific, and allied capitals will likely press for a formal launch-notification framework within the coming months.

China's coast guard has maintained a formation roughly 54 nautical miles east of Taiwan since May, with vessel rotations continuing through July 4 and Beijing describing the deployment as routine patrols, according to Defense News and Taipei's Mainland Affairs Council, which called the presence a violation of international law 1. Separately, the PLA Navy said a strategic nuclear submarine launched a ballistic missile carrying a dummy warhead into the Pacific on July 6, with Xinhua reporting the launch at 12:01pm and impact roughly 7,300 kilometers away, likely overflying parts of the Philippines 23. CSIS assessed the missile was probably a JL-2 or JL-3, marking Beijing's first SLBM launch into international open waters and only its second ballistic missile test in the Pacific since 2024, and noted China gave the United States and Japan only hours of notice, short of the 24-hour standard under the Hague Code of Conduct, which China has not signed 3. Australia, Japan, New Zealand, the United States and some South Pacific island leaders lodged protests over the test, which fell on the same day Australia signed a defense treaty with Fiji 13. Chinese Foreign Ministry spokesperson Mao Ning called the launch consistent with international law and not directed at any specific country 2.

Analysis
China is normalizing coast guard presence east of Taiwan and open-Pacific SLBM tests into a standing posture, with the July 4 rotation signaling sustained rather than transient deployment and forcing regional militaries to resource dedicated monitoring. Beijing's sub-24-hour notice on the missile test, short of Hague Code of Conduct standards it has not signed, will likely push Washington, Tokyo, and Canberra toward formal pursuit of a binding launch-notification framework in the coming months, though continued sub-24-hour notice on future tests keeps that push ad hoc while adoption of Hague-standard notice would remove the urgency. The dual moves may instead reflect routine annual training and equipment validation timed to existing exercise calendars rather than coordinated signaling. Moderate confidence reflects convergent primary reporting, CSIS's technical read and Global Times' PLA-sourced account, on the notification shortfall, offset by limited visibility into Beijing's internal calculus on future test cadence.

3 sources

First the coast guard, then an ICBM: China tests new, long-term ways to hold off rivals in Asia - Defense News
PLA Navy conducts test launch of strategic missile by submarine; China's nuclear triad deterrence significantly enhanced: experts - Global Times
China's SLBM Test Underscores the Importance of a Ballistic Missile Launch Notification Agreement - Center for Strategic and International Studies (CSIS)