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

909K views · 319 reactions | A nuclear weapon program, a war of words...