AdvertisementArmenians Mark A Century Since World War I MassacreApril 24, 2015Scott NeumanfacebookEmailCatholicos Karekin II (R, front), the supreme head of the Armenian Apostolic Church, and Russia's President Vladimir Putin walk to attend a commemoration ceremony marking the centenary of the mass killing of Armenians by Ottoman Turks in Yerevan, Armenia. (Reuters/Landov)