PLA Posts 7 Sorties May 18 — 5 Cross Median Line Into N/SW ADIZ; 5 PLAN Vessels; HIMARS Deadline 13 Days; Post-Summit Pressure Uptick Continues

Taiwan's Ministry of National Defense detected 7 PLA aircraft sorties and 5 PLAN vessels plus 1 official ship operating around Taiwan as of 06:00 local time (UTC+8) on May 18, 2026. Of the 7 sorties, 5 crossed the Taiwan Strait median line and entered Taiwan's northern and southwestern Air Defense Identification Zones — an uptick from May 17's 6 sorties (4 entering ADIZ) and a continuation of the post-summit moderate-pressure pattern. Naval presence is steady at 5 PLAN vessels plus 1 official ship, consistent with May 17. The uptick is notable: May 18's air component (7 sorties, 5 crossings) is slightly elevated above the post-summit baseline set on May 17 (6 total, 4 crossing). The expanded May 2026 sortie sequence now reads: 4 (May 1) → 29 record (May 2) → 1 (May 3) → 2 (May 4) → 1 (May 5) → 0 (May 6) → 22 (May 7) → 12 (May 8) → 8 (May 9) → 12 (May 10) → 7 (May 11) → 9 (May 12) → 2 (May 13) → 3 (May 14) → 15 (May 15) → 6 (May 17) → 7 (May 18). Taiwan MND simultaneously confirmed the HIMARS payment deadline is now 13 days away (May 31). Taiwan's ROC Armed Forces deployed combat air patrol (CAP) aircraft, naval vessels, and coastal missile systems in response. The multi-sector northern+SW crossing pattern mirrors the standard PLA gray-zone pressure corridor and does not indicate imminent exercise escalation.