Why was the united nations created?
After WWII it was formed to replace the League of Nations and hopefully rectify the problems with it’s predecessor. Ultimately it was created to stop another massive war by providing a forum for mediation. It branched out into other areas as well. The reason people criticise it is because they do not understand it. They are under the impression that it was designed to be a world government that would prevent any conflict which couldn’t be further from the truth.