The foregoing points having been duly noted, the respective authorised representatives of France, Great Britain and Russia, together with the representative of Italy similarly authorised by his Government for this purpose, are agreed: France, Great Britain and Russia declare their full agreement with the foregoing notable points, as set before them by the Italian Government. With regard to Sec.Sec.1, 2 and 3, referring to the agreement upon military and naval undertakings of all four Powers, _Italy undertakes to commence active operations at the earliest possible date_, and in any case not later than one month after the signing of the present document by the contracting parties. The present agreement, in four copies, signed in London on the 26th April, 1915, and sealed, by Sir Edward Grey, Cambon, Marchese Imperiali, Graf Benckendorff." After the entry of Roumania into the war (September, 1916) this programme was further extended. 2 =Note from Count Czernin to the American Government, dated March 5, 1917= From the _aide-memoire_ of the American Ambassador in Vienna, dated February 18 of this year, the Imperial and Royal Ministry for Foreign Affairs understands that the Washington Cabinet entertains some doubt, in view of the statements issued by the Imperial and Royal Government on February 10 and January 11 of this year, as to what attitude Austria-Hungary contemplates adopting for the future with regard to submarine warfare, and whether the assurance given by the Austrian Government to the Washington Cabinet in the course of the proceedings with regard to the case of the vessels _Ancona_ and _Persia_ might not be taken as altered or withdrawn by the statements mentioned. The Austrian Government is most willing to meet the desire of the United States Government that this doubt should be removed by a clear and final declaration. It should here be permitted first of all to touch very briefly on the methods adopted by the Allied Powers in marine warfare, since these form the starting-point of the aggravated submarine warfare put into practice by Austria-Hungary and her allies, besides throwing a clear light upon the attitude hitherto adopted by the Austrian Government in the questions arising therefrom.