What If China Invades Taiwan? A Simulation Walkthrough

The Taiwan Strait is arguably the world’s most dangerous flashpoint. We have run this scenario hundreds of times during testing with different assumption variations. Here is a walkthrough of how the simulation handles it.

Setting the Assumptions

For this walkthrough, we set three starting assumptions:

1. China initiates a naval blockade of Taiwan (not a full invasion)
2. The US responds with freedom-of-navigation operations
3. No nuclear weapons are used (explicit constraint)

Quarter 1: Immediate Responses

The simulation’s first quarterly projection focuses on immediate reactions:

• Economic: Global semiconductor supply disruption. TSMC production halts. Stock markets in Asia drop sharply.
• Military: US carrier groups reposition. Japan activates defense agreements. Australia and UK signal support.
• Diplomatic: UN Security Council emergency session (vetoed by China). ASEAN split between pro-China and neutral positions.

Quarter 2: Escalation and Adaptation

By Q2, cascading effects become dominant:

• Economic: Global tech industry scrambles for alternative chip sources. Samsung benefits. European auto production slows.
• Military: China establishes air superiority over the Strait. US maintains presence but avoids direct engagement.
• Resource: Oil shipments through the South China Sea face insurance premium spikes. Alternative routing via Lombok Strait increases.

Quarter 3: New Equilibrium or Further Escalation

This is where assumption variations matter most. The AI projects two plausible branches depending on whether diplomatic channels hold.

What You Can Learn

This scenario demonstrates how GeopoliticsSim handles:

• Multi-domain cascading (military action producing economic consequences)
• Alliance activation mechanics
• Resource flow disruption modeling
• Branching futures based on diplomatic outcomes

Try running your own variation — what changes if Japan stays neutral? What if the US does not respond?