Wars should be banned
A war is a fight between two parties, people, countries. Generally, this war is due to lot many reasons. Sometimes people fight for money, sometimes for control over resources, sometimes they fight over property and sometimes to take something and occupy a piece of land.
Wars happens within states, within nations and also internationally. Though, attempts are always made to stop the war still some elements benefit form war as they sell weapons to other nations for fighting. Every nation is prepared for any kind of fight and we develops missiles and test them periodically to see their effectiveness for defense purpose only.
Wars causes a lot of problems such as loss of money, lives, resources, homes and hit a country its people very badly. There is damage on both sides of the war. So, it's best that wars should be banned.