In this interpretation, the Ottoman Empire had already weakened so far that its eventual breakup was inevitable. European support had helped keep it intact as a counterweight to Russia. Russia's civil war removed that reason for prolonging Ottoman survival. The postwar settlement consequently followed a collapse that had been approaching for years.
Notable Point · 2:27-3:37
Ottoman collapse and the Russian Civil War
One interpretation treats Ottoman collapse as the outcome of long decline once Russia no longer supplied a reason to preserve the empire.