A long-awaited U.S. cybersecurity "doctrine" proposal from Senate Armed Services Committee Chairman John McCain (R-AZ) has been introduced as part of the fiscal 2018 defense authorization bill, according to congressional sources, detailing powers and processes the United States can employ to deter and respond to foreign cyber threats. The provision comes after a months-long push by McCain and the committee to craft a cyber doctrine in the aftermath of Russian hacking in the 2016 election and is detailed in Section...