Executive summary: This exploratory and carefully hedged analysis argues that a Chinese invasion of Taiwan is a disturbingly plausible scenario that could significantly increase the risk of nuclear war, global instability, and existential catastrophes (such as AI or biological disasters), and suggests that targeted diplomatic and deterrence-based interventions—especially those enhancing Taiwan’s military capabilities—may be cost-effective and underexplored opportunities for risk mitigation.
Key points:
Forecasted Risk Impact: The author estimates a Taiwan invasion would raise the chance of a global catastrophe (killing ≥10% of humanity by 2100) by 1.5 percentage points—representing 8–17% of total longterm catastrophic risk, depending on the forecaster pool—largely by increasing nuclear (0.9%) and AI/biorisk (0.6%) threats.
Invasion Likelihood and Timelines: Drawing from Metaculus and defense analyses, the post argues an invasion has a 25–37% chance of occurring in the next decade, with key risk factors including PLA military build-up, China’s 2027 readiness timeline, Taiwan’s faltering deterrence, and rising nationalist rhetoric in China.
Global Catastrophic Consequences: A US-China war over Taiwan could plausibly escalate into nuclear war (5% chance conditional on US intervention), sever global cooperation on AI safety and biosecurity, and accelerate the decline of the liberal international order, each of which could exacerbate existential risks.
Case for Preventive Action: Despite the challenge of influencing great power conflicts, the author argues there is promising room for action—especially in bolstering Taiwan’s deterrence through military investments (e.g., cost-effective weapons like drones and mines) and diplomatic signaling to avoid symbolic provocations.
Cost-Effectiveness of Deterrence: A rough model suggests that doubling Taiwan’s defense budget (~$17B/year) could be about twice as cost-effective at saving lives as top global health charities, and cheaper deterrence strategies (e.g., signaling reserve mobilization) might be even more impactful.
Opportunities for Philanthropy and Research: The post encourages EA-aligned funders and researchers to explore think tank work, wargames, behavioral experiments, and international coordination to identify and amplify the most effective deterrence or diplomatic strategies—arguing this cause area is important, plausibly tractable, and relatively neglected within EA.
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Executive summary: This exploratory and carefully hedged analysis argues that a Chinese invasion of Taiwan is a disturbingly plausible scenario that could significantly increase the risk of nuclear war, global instability, and existential catastrophes (such as AI or biological disasters), and suggests that targeted diplomatic and deterrence-based interventions—especially those enhancing Taiwan’s military capabilities—may be cost-effective and underexplored opportunities for risk mitigation.
Key points:
Forecasted Risk Impact: The author estimates a Taiwan invasion would raise the chance of a global catastrophe (killing ≥10% of humanity by 2100) by 1.5 percentage points—representing 8–17% of total longterm catastrophic risk, depending on the forecaster pool—largely by increasing nuclear (0.9%) and AI/biorisk (0.6%) threats.
Invasion Likelihood and Timelines: Drawing from Metaculus and defense analyses, the post argues an invasion has a 25–37% chance of occurring in the next decade, with key risk factors including PLA military build-up, China’s 2027 readiness timeline, Taiwan’s faltering deterrence, and rising nationalist rhetoric in China.
Global Catastrophic Consequences: A US-China war over Taiwan could plausibly escalate into nuclear war (5% chance conditional on US intervention), sever global cooperation on AI safety and biosecurity, and accelerate the decline of the liberal international order, each of which could exacerbate existential risks.
Case for Preventive Action: Despite the challenge of influencing great power conflicts, the author argues there is promising room for action—especially in bolstering Taiwan’s deterrence through military investments (e.g., cost-effective weapons like drones and mines) and diplomatic signaling to avoid symbolic provocations.
Cost-Effectiveness of Deterrence: A rough model suggests that doubling Taiwan’s defense budget (~$17B/year) could be about twice as cost-effective at saving lives as top global health charities, and cheaper deterrence strategies (e.g., signaling reserve mobilization) might be even more impactful.
Opportunities for Philanthropy and Research: The post encourages EA-aligned funders and researchers to explore think tank work, wargames, behavioral experiments, and international coordination to identify and amplify the most effective deterrence or diplomatic strategies—arguing this cause area is important, plausibly tractable, and relatively neglected within EA.
This comment was auto-generated by the EA Forum Team. Feel free to point out issues with this summary by replying to the comment, and contact us if you have feedback.