And even a region of Slovakia.
You probably mean the conflict with Czechs for Zaolzie region. Yes, Czechs attacked in 1919 and took half of the city of Cieszyn although there were only 10% of them there. Poles about 30%, Germans 60%.
Can you name one thing the Soviets did to deliberately hurt themselves
There are dozens of them. E.g, sending Soviet troops across mine fields without any protective measures. Try to google the topic to learn more.
You can call it whatever you want. Now what?
Nothing. It is enough that we corroborated a commonly known fact - that Soviets were in close alliance with Nazis. Simple. I feel completely satisfied now. :):):)
When you buy the last can at Biedronka, somebody will starve.
Sorry but now you are talking nonsense. It is a clear sign we should bid farewell for the night. :):)
PS. You are lucky I am still enjoying my winter holiday. The new term starts next week and I am going to be veeery busy with online education. :):)