Baltic Sea: Poincaré, Viviani and Margerie are at sea on the battleship France bound for Stockholm. Communications are difficult.
As agreed with Sazonov, Viviani sends instructions to the French ambassador in Vienna to urge Berchtold in a friendly way to act with moderation and restraint in making any demands upon the Serbian government.
Through fragmentary messages they later learn of the Austro-Hungarian ultimatum and its contents.