The essay is based on detailed and critical study of a diary (in English version - memories) of Maurice Paleoloque, the ambassador of the French Republic in SaintPetersburg (Petrograd), translated into Russian and published in Moscow in 2003. The high-ranking French diplomat analyzed the important events and processes in Russia during the First World War and the February Revolution of 1917. As early as the very onset of the war, Maurice Paleoloque predicted the commencement of «troubled time» in the country and, proceeding from the Historical paralleles, outlined the important and interesting characteristics of the Russian «turmoil» that came about the winter of 1916-1917. In detail the influential French Ambassador described its escalation into a revolution. And also he analyzed the first most important decision of the new Russian powers (the different revolutionary Soviets and the Provisional Government).