TM-02First Island Chain · INDOPACOM AOR
Part of the Scenario SimulatorStrategic Question
Can a quarantine break Taipei before allied navies can respond?
What To Notice
PLA exclusion zones encircle Taiwan from three sides. The Bashi and Miyako straits are the only routes for Pacific reinforcement.
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Scale · Indicative
Taiwan Blockade Theater Map
A maritime quarantine of Taiwan strangles the world's most concentrated chip supply and tests every US treaty in the Pacific. The geography — narrow channels, fixed allied bases, and 100 miles of contested water — defines the clock.
Assessment MetadataWATCH
- Analyst
- Warlord Desk · Strategic Analysis Division
- Published
- Mar 15, 2025
- Updated
- May 10, 2025
- Confidence
- MODERATE
- Likelihood
- POSSIBLE
- Time horizon
- 90D
Open-source reporting, official statements, satellite imagery, shipping data, and market signals. No classified inputs.
Methodology →Analytical Chokepoints
- Strait width
- ~180 km
- TSMC share of advanced chips
- >90%
- Taiwan LNG reserves
- ~11 days
- Bashi / Miyako gates
- Only Pacific access
Active Scenarios
Market Spillover
Semiconductors · Asian Equities · Defense
Pressure Points
- TSMC fabs: >90% of advanced-node global supply
- Bashi & Miyako Straits gate Pacific access
- Taiwan holds ~11 days of LNG reserves
- US/Japan basing in Okinawa within 700km
Why the Geography Matters
China's coastline encircles Taiwan from three sides. The First Island Chain — Japan, Ryukyus, Taiwan, Philippines — is both a US containment line and a PLA breakout objective. Whichever side controls the straits controls the tempo.
Map Legend
- Pressure Points
- View Theater Map
- Escalation Risk
- Key Pressure Point