Update for customary IHL database

We have just updated the customary IHL database to include additional practice from Chad, Côte d'Ivoire, Cuba, the Russian Federation and Viet Nam.

The database contains:

• the 161 rules of customary IHL identified in the 2005 ICRC customary IHL study;
• the practice underlying that study;
• regular updates reflecting national and international practice in the field of IHL.