Stalin’s purges? 50 Million at least
3-8 million Ukrainians alone in the Holodomor. Add in the wider Soviet famine of 193233 caused by Stalin, and you have well over 10 million there alone.
Born in Leningrad in one of the oldest families from Russia, which are Princes Naryshkin, Sergei Ivanovich Naryshkin graduated from Leningrad Institute of Mechanics with a degree in engineering in 1978. In the 1990s he also graduated from International Management Institute of Saint Petersburg with a degree in economics.
https://en.wikipedia.org/wiki/Sergey_Naryshkin