Kroll remarks that trade between the USSR and Western Germany is improving and that he hopes they can continue to trade on good terms. The two discuss the Soviet exhibition in FRG, and Kroll suggests to Khrushchev that the USSR should try and reach an agreement with the GDR soon. Khrushchev also mentions that he will not prevent West German citizens (with FRG passports) to enter FRG from Soviet-controlled Berlin, since population control is too difficult. However, he does mention the possibility of building a wall and quickly says that it would be "impossible".