So far I can not find any middle ground on this subject, When I analyzed both perspectives of this I was confused by the complexity of it. When I decided to answer this question I was caught in a crossroads of ideas, war is right and at the same time war is very wrong. People who think that war is wrong are correct, but those who think that we can live without war are foolish. This is instinctive and natural for all species on the planet. When a group of people are put in a situation where all are at risk that self preservation turns into a social preservation, at that point that society is willing to go to war for the greater good of the people. Self preservation is instinctive in all of us, people will go to many extents for self preservation. I think when a society is in chaos or oppressed the only outcome will be war, under those circumstances war is necessary for the preservation of that society in the long run. There are many instances when this has been the case, countries like China, England, Egypt and even the United States have all fought wars for the greater good of the people of those countries. The war that was waged was necessary for the country and for the people of Japan to be at peace. In the end he became the leader of the country and put an end to all the pointless wars between the warlords.
One shogun decided that he would put an end to this and unite the country, to do this he waged war on every warlord one by one. These warlords would war with each other over trivial matters with no apparent end to the cycle of pointless deaths. War is necessary when the outcome benefits the greater good of the people who are involved, for example in feudal Japan the country was split into numerous factions with different warlords called shoguns who ruled certain areas. This is a question that is very difficult to answer, I feel it is wrong by principle but very necessary for the greater good of a society. I think that war is right when it is fought for the right reasons. Humans have been fighting wars since the beginning of creation. I think that war is necessary and natural.