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⚔️ '''War exclusion clause''' is a standard [[Definition:Policy exclusion | policy exclusion]] found in virtually all [[Definition:Life insurance | life insurance]], [[Definition:Property insurance | property insurance]], and [[Definition:Casualty insurance | casualty insurance]] contracts that eliminates coverage for losses arising directly or indirectly from war, invasion, armed conflict, insurrection, rebellion, revolution, or similar hostilities. Insurers include this clause because the catastrophic, correlated, and unpredictable nature of wartime losses makes them fundamentally uninsurable under conventional [[Definition:Risk pooling | risk-pooling]] principles — a single conflict could generate simultaneous claims that far exceed any carrier's [[Definition:Loss reserve | reserves]] and [[Definition:Reinsurance | reinsurance]] protections.

📜 The precise scope of a war exclusion varies by policy form and line of business. In [[Definition:Life insurance | life insurance]], the clause may distinguish between active military combatants and civilians, sometimes covering civilian policyholders caught in a conflict zone while excluding deaths that occur during active military duty unless a separate [[Definition:War risk | war-risk]] endorsement is purchased. In [[Definition:Property insurance | property]] and [[Definition:Marine insurance | marine insurance]], the language typically extends to damage caused by mines, torpedoes, bombs, and other instruments of war, and it often dovetails with a separate [[Definition:Terrorism exclusion | terrorism exclusion]] or is modified by [[Definition:Terrorism Risk Insurance Act (TRIA) | TRIA]]-related provisions. [[Definition:Reinsurance | Reinsurance]] treaties almost universally mirror or further tighten these exclusions, ensuring that the [[Definition:Ceding company | ceding company]] cannot pass war-related exposures upstream without explicit agreement.

🌍 Geopolitical instability — from the Russia-Ukraine conflict to tensions in the South China Sea — has pushed the war exclusion clause back into sharp focus across the insurance industry. [[Definition:Lloyd's of London | Lloyd's of London]] mandated updated war and cyber-war exclusion language for all [[Definition:Lloyd's syndicate | syndicate]] policies beginning in 2023, specifically addressing state-backed [[Definition:Cyberattack | cyberattacks]] that blur the line between conventional warfare and digital disruption. For [[Definition:Underwriter | underwriters]] and [[Definition:Risk manager | risk managers]], the drafting precision of this clause is critical: ambiguous language invites coverage disputes and litigation, while overly broad exclusions may render a policy commercially unattractive. The clause is a foundational element of [[Definition:Policy wording | policy wording]] that directly shapes an insurer's [[Definition:Aggregation risk | aggregation risk]] profile.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:War risk]]
* [[Definition:Policy exclusion]]
* [[Definition:Terrorism exclusion]]
* [[Definition:Marine insurance]]
* [[Definition:Aggregation risk]]
* [[Definition:Lloyd's of London]]
{{Div col end}}

Definition:War exclusion clause - Revision history

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