Is the hope of true peace in our world nothing more than a dream, or can it be achieved? How?

We often hear the leaders of our world talk about world peace, but man seems to always find war within himself, why is this?Is the hope of true peace in our world nothing more than a dream, or can it be achieved? How?
Our world is such a mess right now that true peace would only be possible with the help of God. People need to pray for help and guidance in order to achieve this. I think that most of the problem stems from greed and jealousy and everyone wants to have what the rich nations have.Is the hope of true peace in our world nothing more than a dream, or can it be achieved? How?
it is a dream
It can happen in the next few centuries. But people have to stop revering other people and start revering ideas.