"Richard A. Clarke & Robert Knake, Cyber War: The Next Threat to National Security and What to Do About It (2010) (not available online)."@en . "Richard A. Clarke & Robert Knake, Cyber War: The Next Threat to National Security and What to Do About It (2010) (not available online)."@en . . "Cyber War: The Next Threat to National Security and What to Do About It"@en . .