Fear is why Finland allied with the Nazis.
Fear is why the Soviet Union also signed a pact with the Nazis and invaded Ukraine.
It's easy to justify anything with fear.
The other one is about 300 sqkm with 5 million people.
When in doubt, use basic logic.
Your argument is the same as Iraq being a realistic threat against the US.
Also, list of Russian neighbors not threatened or invaded by Russia:
Belarus (pushed into a sort of union state)
China (too big)
Japan (I think)
Mongolia (I think)
Azerbaijan (I think)
List of neighbors threatened or invaded by Russia:
Ukraine
Georgia
Moldova (Transnistria occupied since 1991)
Estonia
Latvia
Lithuania
Finland
Poland
Your argument appears to be that your enemy's fear driven by losing 27 million people during an invasion/war of extermination is exactly equivalent to your country's fear of weapons that were imagined solely for the purposes of justifying an invasion.
My argument was that it is quite easy to get a domestic population to treat all of the enemy's legitimate fears as utterly irrelevant while treating bullshit domestic fears as existential.
In a way I think you helped make this point for me by forgetting about those 27 million deaths.
If only there was a reason for this.
You've missed a few significant figures there, Finland's area is: 338145 km2
And your idea is that they had zero reason to fear invasion from the west? Even though that is precisely what happened just a few years later?
It is totally ahistoric to pin any actions of USSR on fear or just reaction to external events. If WWII was continuation of WWI (in my and many opinion it was) both Germany and USRR were revanchist powers that wanted to reverse outcome of WWI. Many forgot that Russia later USSR lost WWI badly. Plus Stalin after very, very, bloody consolidation of power in 30ties was ready (in fact it was imperative for regime stability) to start outward aggression/expansion.
Furthermore historian believe that Stalin knew that confrontation w/ Germany is inevitable but (more popular opinion) was estimating it will happen one year later at least or (less popular, even fringe opinion) was amassing forces to attack Germany and was cough by Nazis w/ "pants down". Either scenario would be explanation for initial successes of Operation Barbarossa.
Fun fact - last train with grain from USSR to Germany crossed border few minutes before start of Operation Barbarossa.
In summary - Soviets and Nazis were allies till 1941 - both parties know it was tactical alliance not unlike USSR - GB/USA against Germany and at the very end Japan. Note that after WWII there was cold war between former allies - not unlike like hot war between former alliance parties of Nazis and Soviets.
Second fun fact: Orwell's "oceania was always at war with eastasia" from 1984 is direct reference to how alliances were changing during WWII.
... or maybe because Fins got invaded by Soviets.
Just like fear of "greater finland" made the Soviets invade in the first place.
It's fear all the way down. The only difference is the validity of those fears. Obviously your country's enemies' fears were always invalid while your country's allies' fears were always justified.
And the fear of Poland made the Nazis invade Poland, right?
Their propaganda no doubt presented things this way, but that was far from the truth. Much like Nazis had to stage a Polish attack on German radio station[1] to justify their invasion of Poland, the USSR had to fabricate the shelling of Mainila[2] to justify the invasion of Finland, because neither Poland nor Finland were apparently threatening enough on their own.
Which "fear" prompted the Soviets to invade Romania in 1940? Which "fear" prompted the Soviets to invade Poland in 1939? Which "fear" prompted the Soviets to invade the Baltics in 1940?
Ah, now I remember, the "fear" of not being the premier colonial power.
