Question: ai quyết định dựng lên bức tường berlin
Answer: Nikita Sergeyevich Khrushchyov; Nikita Sergeyevich Khrushchev; Khrushchyov; Nikita Khrushchev; Khrushchev; Nikita Sergeievich Khrushov; Nikita Sergeyevich Khrushov; Nikita Sergeyevich Khrushev; Nikita Khrushchyov; Nikita Sergeyevich Khrushchov; Krúpsếp,; Walter Ulbricht