From that link you posted:
a bit of a bad choice on your part:"The concept is by no means universally accepted."
"...states that Churchill urged Roosevelt to continue armed conflict in Europe in 1945 - but carried out against the Soviet Union, to prevent the USSR from extending its control west of its own borders. Roosevelt apparently trusted Stalin's assurances, and he was unwilling to support Churchill in ensuring the liberation of all of Central and Eastern Europe west of the USSR. Without American backing, the United Kingdom, with its strength exhausted by six years of war, was unable to take any military actions in that part of Europe."
"...the Major Allies against Nazi Germany had agreed to secure democratic processes for the countries that would be liberated from Nazi rule, such as Estonia, Latvia, Lithuania, Poland, Czechoslovakia, Hungary, Romania, Bulgaria, Yugoslavia, and Albania."
Despite the fact that Polish and later Royal Air Force (RAF) planes flew missions over Warsaw dropping supplies from 4 August on, the United States Air Force (USAF) planes did not join the operation. The Allies specifically requested the use of Red Army airfields near Warsaw on 20 August but were refused by Stalin on 22 August (he referred to the insurgents as 'a handful of criminals'). After Stalin's objections to support for the uprising, Churchill telegrammed Roosevelt on 25 August and proposed sending planes in defiance of Stalin and to "see what happens". Roosevelt replied on 26 August that "I do not consider it advantageous to the long-range general war prospect for me to join you in the proposed message to Uncle Joe." The commander of the British air drop, Air Marshal Sir John Slessor, later stated, "How, after the fall of Warsaw, any responsible statesman could trust the Russian Communist further than he could kick him, passes the comprehension of ordinary men."
"Western Betrayal" as a myth
"This "preoccupation with their historical sense of 'damaged self' has fueled resentment" towards the west generally and reinforced the western betrayal concept in particular, according to Ilya Prize.."
Who was gifted Poland on a plate thanks to Mrrs. Churchill & Roosevelt.
I'm not 'Merikan, young lady.