New construction at a military research site near Moscow reveals a specialized laboratory complex designed to research and handle deadly pathogens, experts say.

Since the conflict in Ukraine began, Russia has been heavily developing the biological weapons laboratory at Sergiev Posad-6. According to "The Washington Post," ten new buildings have been constructed there,

Russia has been intensively developing the biological weapons laboratory at Sergiev Posad-6 since the outbreak of the conflict in Ukraine. According to "The Washington Post," ten new buildings have been constructed there,