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A visitor looks at unmanned aerial vehicles during an exhibition of Means of State Security Provision in Moscow, Russia, Oct. 21, 2020. (Photo by Alexander Zemlianichenko Jr/Xinhua)
A visitor looks at unmanned aerial vehicles during an exhibition of Means of State Security Provision in Moscow, Russia, Oct. 21, 2020. (Photo by Alexander Zemlianichenko Jr/Xinhua)