1984 by George Orwell:
None of the three superstates ever attempts any maneuvre which involves the risk of serious defeat. When any large operation is undertaken, it is usually a surprise attack against an ally. The strategy that all three powers are following, or pretend to themselves that they are following, is the same. The plan is, by a combination of fighting, bargaining, and well-timed strokes of treachery, to acquire a ring of bases completely encircling one or other of the rival states, and then to sign a pact of friendship with that rival and remain on peaceful terms for so many years as to lull suspicion to sleep. During this time rockets loaded with atomic bombs can be assembled at all the strategic spots; finally they will all be fired simultaneously, with effects so devastating as to make retaliation impossible. It will then be time to sign a pact of friendship with the remaining world power, in preparation for another attack. This scheme, it is hardly necessary to say, is a mere daydream, impossible of realization. Moreover, no fighting ever occurs except in the disputed areas round the Equator and the Pole: no invasion of enemy territory is ever undertaken. This explains the fact that in some places the frontiers between the superstates are arbitrary. Eurasia, for example, could easily conquer the British Isles, which are geographically part of Europe, or on the other hand it would be possible for Oceania to push its frontiers to the Rhine or even to the Vistula. But this would violate the principle, followed on all sides though never formulated, of cultural integrity. If Oceania were to conquer the areas that used once to be known as France and Germany, it would be necessary either to exterminate the inhabitants, a task of great physical difficulty, or to assimilate a population of about a hundred million people, who, so far as technical development goes, are roughly on the Oceanic level. The problem is the same for all three superstates. It is absolutely necessary to their structure that there should be no contact with foreigners except, to a limited extent, with war prisoners and colored slaves. Even the official ally of the moment is always regarded with the darkest suspicion. War prisoners apart, the average citizen of Oceania never sets eyes on a citizen of either Eurasia or Eastasia, and he is forbidden the knowledge of foreign languages. If he were allowed contact with foreigners he would discover that they are creatures similar to himself and that most of what he has been told about them is lies. The sealed world in which he lives would be broken, and the fear, hatred, and self-righteousness on which his morale depends might evaporate. It is therefore realized on all sides that however often Persia, or Egypt, or Java, or Ceylon may change hands, the main frontiers must never be crossed by anything except bombs.