Time of Troubles
The Russian statehood survived the "Time of Troubles" and the rule of weak or corrupt Tsars because of the strength of the government's central bureaucracy. Government functionaries continued to serve, regardless of the ruler's legitimacy or the faction controlling the throne. However, the "Time of Troubles" provoked by the dynastic crisis resulted in the loss of much territory to the Polish–Lithuanian Commonwealth in the Russo-Polish war, as well as to the Swedish Empire in the Ingrian War.