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Update of customary IHL database – October 2025

New update of the customary IHL database

We have just updated the customary IHL database to include to include additional practice from Canada and Nigeria.

The database contains:

  • the 161 rules of customary IHL identified in the 2005 ICRC customary IHL study,
  • the practice underlying that study,
  • regular updates of the study's practice part.