You don’t have to be a rocket scientist to see what works and do it yourself. If we look at the well known peace makers of our century, we will be able to learn some principles from them.

Riders and Peace Makers have to deal with the situation as it is. The rider here is going to work with Whitey to get him to be back to normal peace makers have to work with the parties to get them back into a status of discussion and to resolve differences and conflict.
Nelson Mandela, South Africa
Martin Luther King, USA
Mother Teresa, India
Mahatma Ghandi
There are many more; let’s begin with them.
The mores successful attempts we study, the more we will learn what works.
We can gain by unsuccessful attempts too:
Neville Chamberlain, Great Britain vis a vis Germany during Czechoslovakian crisis 1938.