What role if any did Rasputin play in the fall of Romanov Russia?

Rasputin's presence in the Romanov family history did not have an influence of the royal family's downfall. Yes, he did have some say in decissions through his friendship with Alexandra, however these did not impact the major causes of the fall of the Romanovs. The fall of the Romanov's was inevitable as a result of social discontent and Tsar Nicholas' inexperience along with other factors.