The world as a phenomenon is equal to itself and cannot be anything else.If I could ask this question"Is a world possible without a world?", that would be an answer for the question about a peaceful...
no because peoples of the world have different virtues and beliefs and most of them are closed minded on what the others say so conflict starts and continuously occurs.
No one human being can answer this question. No one knows exactly WHEN the world will end. Some people believe that the entire world will end during World War 4, but no one knows that for sure.