No period in world history has been free from the devastating effects of war.
We have had wars of all types--- wars lasting for a year or so and a war lasting for hundred years.
Man is a highly dynamic creature and it seems that he cannot remain contented merely with works of peace - the cultivations of arts, The development of Modern comforts, the extension of knowledge, the means and appliances of a happy life. It is an incentive to scientific research and development.
He wants something thrilling and full of excitement and he fights in order to get an outlet for his accumulated energy. War is obviously an escape form the lethargy of peace.
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.
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.
Adding to all this is the traditional enmity between national and international disharmony that have their root in past history.
The Uniter Nations Organisation, with all the good work that it has seen doing, is not proving as effective as was desired.
A large number of wars, The most recent ones behind the one in Vietnam, the other between India and Pakistan, or Ind-China war, Iran-Iraq war or Arab Isreal war.