How Many People Died Under Stalin?

That’s a sad question, because while we have clear numbers on Hitler and Pol Pot, it is academically accepted that Stalin had more people put to death secretly than simply died while under his reign as dictator. We can only guess and say 20 million dying under his reign and at least that many put to death or killed during military service during WW2. So an educated guess would be 40 million people died due to Stalin.