Diplomacy and statistics : the emergence of the Armenian question (1878-1913). First period : the Congress of Berlin and the emergence of the Armenian question, 1878 -- Second period : the 1895 memorandum -- Third period : "vilayat-i şarkiyye islahatı," reform of the oriental provinces, in 1914 -- War, massacre, and statistics (1914-1918) : the "definitive solution" of the Armenian question. Political persecution -- Deportation, the Suez Canal Operation and the persecution of deserters in Zeytun -- Massacres : the Van resistance/rebellion and further deportations -- July 20, 1915 : secret order concerning counting and mapping -- Dispersing Armenians according to the principle of 2%, 5%, and 10% -- Photographing Armenians, covering the massacre : the construction of an official ideology -- The number in the crime : counting the Armenian dead -- Some remarks