Convention (III) relative to the Opening of Hostilities. The Hague, 18 October 1907
[list of Contracting Parties elided]
Considering that it is important, in order to ensure the maintenance of pacific relations, that hostilities should not commence without previous warning;
That it is equally important that the existence of a state of war should be notified without delay to neutral Powers;
Being desirous of concluding a Convention to this effect, have appointed the following as their plenipotentiaries:
[list of plenipotentiaries elided]
Who, after depositing their full powers, found in good and due form, have agreed upon the following provisions:
Article 1. The contracting Powers recognize that hostilities between themselves must not commence without previous and explicit warning, in the form either of a declaration of war, giving reasons, or of an ultimatum with conditional declaration of war.
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