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International Criminal Law - Lawful Ruses vs. Perfidy
Lawful Ruses of WarDefinition:
Deceptive actions intended to mislead the enemy without violating IHL or betraying legally protected trust.
Key principle:
They manipulate expectations about military actions, not about protected status.
Examples:
They do not exploit the enemy’s reliance on protections guaranteed by the laws of war. They are considered part of normal military tactics.
PerfidyDefinition:
Deception that betrays a promise of protection under IHL or induces the enemy to believe they are entitled to safety when they are not.
Key principle:
It involves pretending to be protected (civilian, wounded, surrendering, medical, neutral) in order to kill, injure, or capture the enemy.
Examples (prohibited):
It destroys the mutual trust necessary for IHL protections (e.g., for surrender, hospitals, humanitarian missions). Under the Geneva Conventions, perfidy is a war crime.
Lawful Ruses of WarDefinition:
Deceptive actions intended to mislead the enemy without violating IHL or betraying legally protected trust.
Key principle:
They manipulate expectations about military actions, not about protected status.
Examples:
- Camouflage, concealment, decoys
- Dummy installations (fake artillery, vehicles)
- Feigned movements (fake retreats or misleading maneuvers)
- Electronic deception, false radio traffic
- Ambushes (as long as protected symbols aren’t abused)
- Misinformation that doesn’t involve protected emblems or false surrender
They do not exploit the enemy’s reliance on protections guaranteed by the laws of war. They are considered part of normal military tactics.
PerfidyDefinition:
Deception that betrays a promise of protection under IHL or induces the enemy to believe they are entitled to safety when they are not.
Key principle:
It involves pretending to be protected (civilian, wounded, surrendering, medical, neutral) in order to kill, injure, or capture the enemy.
Examples (prohibited):
- Feigning surrender (raising hands, white flag) to attack
- Pretending to be wounded or sick to lure the enemy
- Misusing the Red Cross / Red Crescent / Red Crystal emblem
- Pretending to be a civilian or non-combatant
- Pretending to be under UN protection
- Misusing protective signals or uniforms (e.g., neutral state forces)
It destroys the mutual trust necessary for IHL protections (e.g., for surrender, hospitals, humanitarian missions). Under the Geneva Conventions, perfidy is a war crime.
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