Would you fight as brave as people in Warsaw Uprising when attacked from every side by Germans and Russians?
I think that this question has a major flaw:
The Warsaw Uprising was in response to the German attempt to reinforce Warsaw, to make it into what they referred to as a “fortress city.” Many cities that were in the path of the Soviet Army Center’s drive on Berlin were slated to be part of a complex web of defensive positions, intended to sap the soviet forces and thin the Soviet lines of supply.
The Warsaw Uprising was inspired by the notion that soviet liberation of Warsaw was on the way. The Uprising was initiated by the Warsaw Ghetto insurgent elements who wanted to help pave the way for soviet liberation. These anti-German insurgents were in contact with the soviets and to a lesser extent with the western forces.
The timing of the Warsaw Uprising was unfortunate and the purpose (to facilitate the earlier arrival of soviet forces) went unfulfilled. German SS units put down the uprising before it could have the desired effect of paving the way for soviet cooperation.
After the fact, the surviving Polish Nationalists involved in the uprising felt betrayed because Stalin did not make it a priority to make Warsaw a priority in time to act in concert with the Warsaw insurgents. The insurgents were brutally crushed by the Germans.
The Polish Nationalists were also driven by the desire to beat the soviets to the punch, in the sense that they wanted to control their own political destiny, if possible. So they acted prematurely and tend to blame Stalin for acting too late to save the Uprising from utter failure.
For his part, Stalin certainly considered the political make-up of the insurgents and concluded that they would be less friendly to setting up a soviet-style government in Warsaw after the war.
So…the soviets deserve a share of the blame for the failure of the Uprising, but they cannot be said to have been attacking Poland in 1944.
Now, September 17, 1939 is a different question entirely! Then they did attack Poland, while Poland’s western allies (Britain and France) sat back and did NOTHING. Rather, Britain and France singled out Germany alone for a declared war, while giving the soviets a pass when they participated in the invasion of Poland.