On March 18, Turkey honors the memory of the fallen soldiers in the battle of Canakkale, which began on March 18, 1915. This day is known as Memorial Day or Canakkale Victory Day.
During the First World War, the Ottoman Empire was part of the military bloc of the Central Powers. The geographical position of the Ottoman Empire allowed it to control the Bosporus and Dardanelles, connecting the Mediterranean and Black Seas. This situation significantly complicated trade, economic and military ties between Russia and its partners in the Entente bloc.
In general, the struggle for these straits has always been a stumbling block in relations between Russia and Turkey. And the reasons for this struggle, of course, were primarily economic factors.