Jakob the Liar (1999)

In 1944, Jewish shop owner Jakob (Robin Williams) overhears a radio broadcast on the movements of the Soviet army while he is shuttled to Nazi headquarters from the Warsaw, Poland, ghetto where he is imprisoned. Upon his return, he whispers what he's heard to his friend Mischa (Liev Schreiber), and before long the whole ghetto is alive with rumors and hope that the long war will soon end. Determined to keep up their spirits as best he can, Jakob continues to lie with the best of intentions.