Philippines' Three-Front West Philippine Sea Standoff: AFP Monitors Ongoing CCG Presence at Scarborough, Second Thomas Shoal, and Pag-asa After CCG 4305 Zambales Withdrawal

The Armed Forces of the Philippines and Philippine Coast Guard continued monitoring a three-front West Philippine Sea standoff on May 22, 2026, following the withdrawal of CCG 4305 from the Philippine EEZ off Zambales on May 21. The three active fronts: (1) Xiang Yang Hong 33 research vessel (CCG escorts 5101 and 5309) — Day 16 of unauthorized operations in the Kalayaan Island Group vicinity, with the PCG formal investigation into the May 16-17 Sandy Cay 2/3 personnel landing ongoing; (2) Scarborough Shoal — China's 'marine nature reserve' declaration and April floating barrier remain unanswered since the Philippines' DFA diplomatic protest of May 11; (3) Second Thomas Shoal (Ayungin Shoal) — the BRP Sierra Madre marine garrison continues to face a CCG blockade posture, with resupply missions the subject of ongoing diplomatic monitoring. AFP's most recent vessel count (May 12-18 period: 27 Chinese vessels across Panatag, Ayungin, Escoda, and Pag-asa) underscored continued multi-location pressure. Philippines' multi-treaty response framework — US MDT (reaffirmed to cover coast guard vessels), Japan RAA (in force September 2025), France SOVFA (signed March 2026), AUKUS partner coordination — remained the foundation of Manila's deterrence posture. Philippine DFA Secretary Theresa Lazaro, in her capacity as 2026 ASEAN Chair, continued to press for accelerated Code of Conduct negotiations, though analysts consistently assessed a binding COC as 'not achievable' in 2026 given fundamental disagreements on geographic scope and legal enforceability.