This is a thorough and sobering documentation of the background to the current Russian action in Ukraine. It is a story of modern day genocide with the equivalence of the Romans in Carthage and the Turks in Armenia.
Watched from beginning to end, it will dispel any residual naivete surrounding the conflict between Ukraine and Russia. The support of Ukraine, including sanctions against Russia, are a stain on Western Civilization.
The only criticism that can be levelled against the Russians is that they did not act sooner.