Russian opposition leader Alexey Navalny speaks plainly when criticizing President Vladimir Putin. .
"These are people who are trying to steal my country and I strongly disagree with it," Navalny told 60 Minutes in 2017.
60 Minutes correspondent Lesley Stahl first interviewed Navalny in the lead-up to the 2018 Russian presidential election.
Laboratories in Germany, France, and Sweden confirmed Navalny was poisoned by a Novichok nerve agent.
"I'm trying to not think about it," Navalny said.