Russian soldiers eat the best possible nutritious rations of any military, so long as it's dog food. - John Sweeney

We don't know the whole story, and probably never will. But we do know that Vladimir Putin exhibits multiple signs of being a psychopath: smooth lying with no tics; fearless dominance; blame externalization; unexplained easy life.

Intriguingly, reporters from Novaya Gazeta were able to track down an unidentified prisoner in the Polar Wolf colony who told them that a 'strange commotion' had erupted in the prison on the evening of 15 February, before the official time of death. The secret prisoner said that the guards had accelerated their evening checks of the prisoners and strengthened security. In the morning of the 16th there was a 'total shakedown' of the prison, with guards confiscating mobile phones and other items from prisoners. Soon after, a committee from the central office of the Federal Penitentiary Service arrived, the prisoner said. Word spread throughout the prison that Navalny was dead at 10am Yamal time, 8am Moscow time, 0500 GMT, more than four hours before the official time of death.

Navalny's documentary is gripping because it reveals both the immensity of the tsar's wealth but also the shabbiness of his soul.
Dictators murder decor like they murder people. Idi Amin's sordid bungalow, Saddam's pre-cast cement palaces in Northern Iraq, Kim Il Sung's waxwork house, I've seen them all and they smack – how can I put this diplomatically? – of Cupid Stunt. [...]
The palace estate stretches out for 70 million square metres, is owned by the FSB, fully leased until 2068 for 'research and educational activities', boasts state-of-the-art communication towers, its own gas station and boilers. There is an almighty fence to keep out the riff-raff, an amphitheatre, a secret tunnel leading from the palace to the beach, a window cut in bare rock so that the dictator can admire a sea view just like a Bond villain from his lair.