A consensus seems to have emerged among government decision-makers, military strategists, and scholars that an invulnerable nuclear retaliatory capability is a national goal of high priority, if not top priority. The Kennedy Administration, to a much greater degree than its predecessor, has given indication that the rationale and ingredients of a “second-strike” nuclear strategy are understood and being concretely programmed into defense planning. The agreed-upon goal is for the United States to be able to launch a devastating retaliatory nuclear attack against the enemy regardless of the size of the enemy's first strike against the United States. “As a power which will never strike first,” explained President Kennedy in his March 28 defense budget message, “our hopes for anything close to an absolute deterrent must rest on weapons which come from hidden, moving, or invulnerable bases which will not be wiped out by surprise attack. A retaliatory capability based on adequate numbers of these weapons would deter any aggressor from launching or even threatening an attack—an attack he knew could not find or destroy enough of our force to prevent his own destruction.”