…A glimpse of what could lie ahead, if the next president continues the projects begun by the Obama Pentagon, came in a provocative 2014 study, “Toward a New Offset Strategy,” by Robert Martinage of the Center for Strategic and Budgetary Assessments. Martinage recommended a dizzying new arsenal that would include a fleet of unmanned subs; an array of undersea sensors; “seabed payload pods” that could hide drones underwater until they were needed in a conflict; electromagnetic rail guns and directed-energy weapons; high-energy lasers that could blind enemy sensors; and a range of other new technologies. “These initiatives would contribute to an effective offset strategy by affordably restoring U.S. power projection capability and capacity, bolstering conventional deterrence . . . and imposing costs upon prospective adversaries,” Martinage wrote…