Such rubbish. No one inside Russia will stand up and denounce Putin.
They might assassinate him, but in Hitler's time, there were 22 attempts on Hitler's life. None even got close, much less succeeded.
Hitler never had to answer for his crimes. He was the only one who could eliminate the threat he represented, and he killed himself rather than be captured and punished.
Rich people like Trump and Putin are never punished for their crimes.
The threat of a Third World War will not subside until Putin is dead.