Cast
Sergei Bondarchuk
Igor Kurchatov
Georgi Zhzhyonov
Vitaliy Zubavin
Nikolai Volkov St.
Abram Ioffe
Irina Skobtseva
Marina Kurchatova
Nikolay Burlyaev
Fedya
Alla Pokrovskaya
Tanya
Yakov Tripolsky
Stalin
Mikhail Ulyanov
Zhukov
Sergei Yursky
Robert Oppenheimer
Oleg Basilashvili
Boris Pash
Alla Demidova
Jane
Innokentiy Smoktunovskiy
Roosevelt
