I definitely agree that this is interesting. It's important to remember that we're not seeing any kind of unfiltered
pure analysis, even though this is unique as far as Hitler sources go. He's talking to an ally, so it's in his interest to make the same kind of justifications we've heard before, such as when he says he
knew the Soviets were going to attack and try to conquer Europe, so his attack was a pre-emptive one.
If the Soviet Union had invaded Romania, that would probably have brought them into war with the Allies. That was already
very close to happening a few times.
https://en.wikipedia.org/wiki/Franco-British_plans_for_intervention_in_the_Winter_War
https://en.wikipedia.org/wiki/Operation_Pike