 During this raid, Stalin smuggled Lenin out of the newspaper's office and took charge of the Bolshevik leader's safety, moving him between Petrograd safe houses before smuggling him to Razliv.In Lenin's absence, Stalin continued editing "Pravda" and served as acting leader of the Bolsheviks, overseeing the party's Sixth Congress, which was held covertly.Lenin began calling for the Bolsheviks to seize power by toppling the Provisional Government in a "coup d'état".