WW2 has everything to do with the current situation. You can bet your ass that Putin has read up on that period of history, as well as taken notice of the weakness of current world leaders.
You mean like when The Soviets invaded Hungary and murdered hundreds of civilians? Or when The Soviets invaded Afghanistan and murdered hundreds of thousands of civilians? Oh, wait, you must mean when Stalin starved 5 million people to death, when he cut off food to The Ukraine? Which is it?The history of the Soviet Union and the Cold War are far more important lenses to view the situation through.