Is total world peace possible?
World peace can and will be achieved for seven years, then the end of the world will begin. Of course, when Christ descends in his Glorie, we will have peace forever.
It is possible for there to be world peace when we discover aliens exist and we are at war with them. Seeing those so different from us will force us to see our similarities.
So, a man comes across a magic lamp in the desert. He picks it up and rubs it gently. Out comes a genie who grants him one wish. The man wishes for world peace. Do you know what happened?
World peace can never happen, as human nature has decided. People invariably do and will have conflicts with other people. This conflict will force the formation of parties and coalitions, where people of similar interests will join forces for a particular issue and only for that issue. This means that if a person is against a particular political stance for example, they will join with other people with similar interests for that topic only. However whenever a discussion of another issue takes place it is very unlikely that a person will still continue to hold the same stance as other people within the same party causing conflict even within the party. It is the ability to form and join multiple parties depending on the issue that makes human incapable of World Peace (peace between all of mankind). It is impossible to find a person that holds the same stance as another individual in all aspects and issues.
World peace is impossible. Why? Many reasons, but the biggest is simply disagreeing.
Just like how we disagree on this web site. All countries will always have something to disagree about that will lead to war because there will always be bias countries.
Even if God were to come down (an arguable point), people would argue about his reign. Man killed Jesus last time, what will happen next time?