Hope for a protracted war in Poland, with the active participation of allied Western powers vanished like smoke. The German-Polish war was not far from our borders. The Soviet leadership did not have confidence in the fact that the Nazis with such a successful, rapidly moving forward to stop the rivers Pissa lines Narev, Vistula and San, set them as the limit of the secret protocol. They should stop. In this regard, we stood two questions: how, under any pretext, enter the Soviet troops on the territory of Poland, and then how to explain this action to the Soviet people and the world?