The fact of the matter is that, fighting is a natural instinct in peace. It is, indeed, too much to exact so many nations to live in a state of eternal peace. Besides, there will always be wide differences of option between various nations, different angle of looking at matters that have an international importance, radical difference in policy and ideology and they cannot be settled by mere discussion so that resort to war becomes very necessary in these cases. Before the outbreak of World War II, for instance, the spread of communism in Russia created distrust and suspicions in Europe. Democracy was an eyesore to Nazi Germany. British conservatism were apprehensive of the possibility of Britain being communized. In short, the political ideology of one country being abhorrent to another, the state of affairs as certainly not conducive to the continuance of peace.