Britain needs to spend money on building defenses against an “E-bomb” that would explode in the upper atmosphere and knock out all electronic communication and power, the Defense Secretary will say today. Phillip Hammond will tell a conference that money needs to be spent on defenses that “cannot be seen on the parade ground.” Dependence on electronic networks “creates vulnerability” he will say, adding that the response cannot be based on “infantry, or jet planes or destroyers.” There is an increasing possibility that a rogue state could use an “E-bomb” that would release a devastating electromagnetic pulse (EMP), experts will...