abdication alexander kerensky alexander konovalov alexey peshekhonov bolshevik coat of arms of russia currency february february revolution flag of russia georgy lvov government grand duke michael alexandrovich of russia grigory zinoviev izvestia julian calendar july days kerensky offensive leon trotsky lev kamenev list of leaders of russia menshevik military revolutionary committee national anthem nicholas ii of russia october revolution octobrist petrograd soviet provisional government pskov pulkovo russia russian civil war russian constituent assembly russian social democratic labour party russian language saint petersburg socialist-revolutionary party state duma state duma of the russian empire tsentralna rada vladimir lenin winter palace world war i