Alexei Navalny believed he would die in prison, memoir reveals

In secret journal, Putin's fiercest critic writes: If your convictions mean something, you must be prepared to stand up for them'

The late Russian opposition leader Alexei Navalny believed he would die in prison, excerpts from his memoir reveal.

Navalny was the most prominent foe of the Russian president, Vladimir Putin, and relentlessly campaigned against official corruption in Russia. He died in a remote Arctic prison in February while serving a 19-year sentence on several charges, including running an extremist group, which he said were politically motivated.