To do this would require the continued good will of many sovereign states for an indeterminate length of time. With this requirement we should never overlook the not too fantastic possibility that at some future date existing alliances and international friendships might be neither expedient nor profitable to the other states. Would the possibility not then arise whereby, for reasons of nationalistic or propaganda pressures, we would be forced finally to retire our forces behind our own shorelines? Would this not be, then, tantamount to isolation? And, in such a case, with our deterrent for security safely locked up, would it not be less difficult for the USSR to exert pressure for the capitulation of desired areas by means other than the threat of nuclear attack?