Convened by Tsar Nicholas II, the 1899 and 1907 Hague Conferences create the Permanent Court of Arbitration and codify the laws of war (based on the Lieber Code), with Argentina and Brazil participating for the first time.
InstitutionPermanent Court of Arbitration, The Hague
Historical regionThe Hague, Netherlands
Primary sourceConvention for the Pacific Settlement of International Disputes (1899/1907)
Secondary sourceWikipedia; Oxford Public International Law