Tossup

1 (+) 2 3 4 (15[1])(*) 5 6 (10[1])7 ■END■

ANSWER: Soviet Union [or USSR; or Union of Soviet Socialist Republics; accept Belarus; prompt on Russia] (Sources: The Ascent - dir. Larisa Shepitko; Come and See - dir. Elem Klimov)
<AP, Visual>
= Average correct buzz position

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