"We're seeing the sum of all fears, which is tens of thousands of people missing and presumed dead." Nathaniel Raymond of Yale School of Public Health warns of mass deaths in Sudan as the UN visits el-Fasher. | Al Jazeera English

158K views · 968 reactions | What's behind the growing fears of a Russian nuclear attack on Ukraine? We asked a nuclear expert about the possible scenarios. | DW News | Facebook

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9.2K views · 50 reactions | “The question is, would you really escalate from a cyber war to a nuclear war?” A new US review of nuclear weapon policy lays out scenarios under which the president might use a nuclear weapon in response to a non-nuclear attack. National security reporter and analyst David Sanger explains. | Christiane Amanpour | Facebook