I respect and appreciate Lend-Lease, I can't tell if it saved the war, but it certainly saved hundreds of thousands if not millions of lives by providing much-needed humanitary assistance in hunger-struck WW2 USSR.
As for conciseness, I don't believe I've taken too long to explain my point of view, it's just that the geopolitics of the era are complicated, and they require lengthy explanation by themselves. I haven't overcomplicated anything, and it's your choice whether to read it or not, but it's a collection of several extremely important points IMO that define the Soviet policy in the prelude of the Great Patriotic War.
As for Poland, can you pinpoint me to what exactly of my analysis you disagree with? I'd like to learn more if you have any valuable input


Good moment to join a union by yourself (and/or a socialist org like the PSL) and ask or directly organize yourself together with such orgs!