The Defense Department is set to craft a new theory for the use of space in pursuit of military goals, an effort that analysts expect will tackle the thorny issue of establishing U.S. superiority in outer space, but could trigger debate over a possible international race to militarize the heavens. Ryan Henry, principle deputy under secretary of defense for policy, said that senior leaders overseeing the ongoing Quadrennial Defense Review have directed the drafting of a new policy to guide...