It is of course correct that the original problem was created through the criminal Molotow-Ribbentrop pact. No doubt that Nazi Germany and Stalin have the main guilt. Nevertheless the Poles fought like tigers on the anglo-american side (and never ever on the side of the Russians) and were sold to Stalin by the United States and England after the war since they were not useful to them anymore. In Europe we call such attitude treason, espechially if we talk about direct betrayal of brothers in arms. If you got another word for it - just let me know.
I am well aware that it is not PC to say this here, but it is simply the truth.
Soldiers might have the right to use a motto like "Semper Fidelis" if they give proof to it on the battlefield. If we talk about politicians they should better use "Semper Infidelis". The best thing is that you do not have to care about the proof. They will betray you sooner or later no matter where they come from. :(
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OK, firstly the U.K. got into the war to try and save Poland after a certain country (which shall remain nameless) invaded it without provocation and very much against the wishes of the Brits and all other civilized people. No way, no how was it some kind of dastardly attempt by them to use the Poles as their surrogates
Now, the U.S. got into the European war because a certain country (which shall remain nameless) declared war on us. It really did not have much to do with Poland.
Few here on FR will defend what FDR did at Yalta, especially with 20/20 hindsight,but his administration was filled with communists, he was sick, he trusted Stalin to a degree, there were 400,000 U.S. dead in the war which we in no way sought, and the war did not appear to be ending soon.
So while I won't defend him, I won't accuse him of "treason".