On the Eve of 1917 "Every worker had a vague idea that inside those grey greatcoats, soldiers’ hearts were beating in time with his own wishes. The task of the proletariat for 1917 was to draw the army into a revolutionary front against the tsar, the landlords, the bourgeoisie and the war."
Letters from Afar On 21 March 1917 (3 April according to the new calendar), the first of Lenin's Letters from afar was published in Pravda, which was at that time edited by Joseph Stalin and Lev Kamenev. In these letters Lenin outlined the main characteristics of the Russian revolution and laid the basis for the political reorientation of the Bolshevik party. This was the political basis for the coming to power of the Bolsheviks only 7 months later.
Lenin (Encyclopedia Britannica) "Lenin was prepared for his struggle on an international scale not only by his profound knowledge of Marxism and his experience of the revolutionary party organization in Russia, but also by his intimate acquaintance with the workers’ movement throughout the world."