Russian and Chinese threats to use nuclear weapons in Europe or across the Taiwan Strait pose “stark real-world problems” in defining deterrence as the United States modernizes its strategic forces, security experts agreed Wednesday. While the three panelists and keynoter speaker former Sen. Jon Kyl (R-Ariz.) said modernizing all legs of the triad and the weapons systems was essential, Keith Payne, the chief executive officer of the National Institute for Public Policy… – USNI News Photo: Russian Navy