The Number of Human Losses During the Armenian Genocide

Speaking on the human losses during the Armenian genocide in 1915, many sources give different numbers. Turkish denialist sources give the number 300 thousand (although the Turkish government after the end of the WWI admitted that 800 thousand Armenians lost their lives during the massacres), while some foreign sources accepting the historical fact of the Armenian genocide give the number 1 million for Armenian human losses (during 1915-1918) or 1.5 million (during 1915-1923). Armenian and some foreign sources give the number 1.5 million for Armenian losses during 1915-1918, and 2 million during 1915-1923. Other sources give other numbers.
I would like to note that two Iraqi newspapers published in 1919 mentioned, quoting from foreign sources, that the number 1.5 million of Armenian losses (up to that date) was turned up after an investigation was conducted into this matter.
“Al-Arab” (published in Baghdad city) and “Al-Mosul” (published in Al-Mosul city) Iraqi newspapers said (translating from Arabic): “The Petit Parisien newspaper was informed from Al-Istana (Istanbul) that an investigation was conducted into the Armenian massacres which concluded that 1.5 million people were killed and that Enver Pasha, Taalat Pasha, Jemal Pasha and General Liman Von Sanders had the greatest responsibility for these massacres, and that half of the Armenian people were killed because the massacres were organized scientifically by the Germans..”.
(The Armenian Massacres, Al-Arab newspaper, No. 472, Feb. 10, 1919, Baghdad, Iraq, p.3; External Events-The Armenian Massacres, Al-Mosul newspaper, No. 36, Feb. 24, 1919, Mosul, Iraq, p.3).
“Al-Mosul” newspaper also said: “A telegram from Paris informed that on the base of the investigations conducted into the question of the Armenian massacres it was concluded that the Armenian people (in Turkey) lost about 1.5 million people, i.e. nearly fifty percent of the (Armenian) population..” (External Events, Al-Mosul newspaper, No. 21, Jan. 17, 1919, Mosul, Iraq, p.3).