On June 26 1907 Stalin (or Koba as he was then known) helped orchestrate a robbery on a state bank carriage carrying a rather large amount of money in Tiflis that was escorted by serveral Cossack gaurds. Althrough OTL it is not clear he was actually present at time. But lets say he was in this alternate history. What happens if Stalin is shot and killed by the Cossack gaurds. How does this affect the Bolshveik revolution and the leadership struggle after Lein dies?