Treaties, States Parties and Commentaries
Treaties and Documents
Geneva Conventions of 1949 and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Declaration concerning the Laws of Naval War. London, 26 February 1909.
Chapter II : Contraband of war - Art. 23.
Art. 23. Articles exclusively used for war may be added to the list of absolute contraband by a declaration, which must be notified.
Such notification must be addressed to the Governments of other Powers, or to their representatives accredited to the Power making the declaration. A notification made after the outbreak of hostilities is addressed only to neutral Powers.