(Catching up after vacation.)
April 9, 1917 (March 27 old style)
Trotsky leaves exile in New York to return to Russia. Meanwhile, the Provisional Government declares that its purpose in continuing the war is solely for the defense of Russia. This serves as a compromise position with the Petrograd Soviet, which accepts this new formulation.
April 13, 1917 (March 31 old style)
Plekhanov arrives in Petrograd, after nearly 40 years in exile. Plekhanov is a different man from when he left, now supporting the War for territory, and the advance of capitalism in Russia.
April 16, 1917 (April 3,1917 old style)
Lenin, Zinoviev and other Bolsheviks arrives in Petrograd coming from Switzerland. They are met at the train station by a large contingent of jubilant workers, soldiers, and party members.
April 17, 1917 (April 4,1917 old style)
Lenin presents his April Theses, his agenda for the continuation of the Revolution. He argues that the ruling Provisional Government is unacceptable because the workers, and the workers alone, should be the ones in power. The Bolsheviks soon produce an educational pamphlet for workers on Political Parties in Russia and the Tasks of the Proletariat. Meanwhile, the steamer Trotsky is traveling on is stopped for inspection by the British Navy in Canada, and despite the General Amnesty and having his visa in order, he is thrown into a British prison, along with several other Socialists for their opposition to the War.