The Soviets' military problems made them give up lots of the land they were arguing over. But to lots of other people it looked like Poland lost the war. Most of the polish negotiators were members of the National Democrats, who were Piłsudski's political enemies. The National Democrats did not want more than a third of the people living in the bigger Poland to be non-Polish, so they agreed to get less land than they would have gotten, even though many Poles would be left on the Soviet side of the border.