Dr. Józef Retinger, who was Sikorski's special political advisor at the time, was also in agreement with Sikorski's concept of Poland's realigned post-war borders, later in his memoirs Retinger wrote: "At the Tehran Conference, in November 1943, the Big Three agreed that Poland should receive territorial compensation in the West, at Germany's expense, for the land it was to lose to Russia in Central and Eastern Europe.