Vladimir Putin: How an average student became one of the world’s most feared men

Russian President Vladimir Putin escalates invasion of Ukraine

Ukraine's Zelenskiy: Putin Is a Predator

Putin: The Early Years

'He wants to be Putin the Great': What history teaches us about Putin

Biden, Russia's Putin deliver vastly different speeches

WATCH: Putin’s speech revealed no signs that he is planning to escalate the war in Ukraine, according to UCL’s Aglaya Snetkov.