That's some amount of waffle. Hitler & Stalin signed a pact, and invaded Poland from opposite sides, so the USSR "allowing" (allowing LMAO) Nazi Germany to expand is utter nonsense.
Putin's NATO expansion argument is also BS. Essentially, he is saying that Russia gets to dictate to any country that borders it whatever Russia wants. Russia gets a veto on what you can join or who you can join. What exactly gives Russia that "right"? Russia should get over its inferiority complex.
It's hilarious that Putin has managed to do the opposite of what he intended, I expect, in just a few short days. The EU buying arms, Germany supplying arms, Sweden supplying arms, Germany increasing defense spending, Switzerland getting involved in sanctions, Sweden and Finland making noises about joining Nato.
If he thought, in his obviously deluded & paranoid brain, that they were all against Russia (they weren't), well, they are now.
Putin would be better served asking himself why all these countries are eager to join Nato or the EU versus do whatever Russia wants. Maybe Nato & the EU are not the problem, maybe Russia (or its "my way or I invade you" approach) is.