Whether or not Putin actually had him assassinated, years of unfair imprisonment and abuse certainly contributed heavily to his death. Putin is responsible, in one sense or another.
That doesn't say much, though, as people might suddenly die looking healthy from aneurysms, strokes and what not. An independent medical examination would be the only way to prove the cause of death. Which we know we'll never get.
Conservatism is a terminal disease long overdue for a cure. Navalny tried his best to fight the disease. It killed him. The world needs to fight conservatism together or we will all suffer and die because of it.
Navalny the guy who said the best way to deal with Muslim's is a bullet and calls them cockroaches[1], who was so anti immigration he got kicked out of the center right party[2], and anti LGBTQ is the cure to conservatism?
The Kremlin is extremely effective at convincing the Russian people to dismiss opposition figures who have fled the country to avoid being killed by Putin as "foreign agents". Navalny chose his own death over the death of his political movement. I hope history rewards him for it.