Listening well is an act of caring. If you are a good listener, you have many friends. If you are a poor listener, you have many acquaintances. Anatomically, we are made to listen more than speak, which is why we have two ears and one mouth. Choose a place to resolve the conflict, not the battleground itself.
Armies tend to sign peace treaties far from the war zones.
Too many emotions are there. In some schools around the country where progressive faculties are teaching, peace rooms are in place. Anyone who was fighting in the schoolyard, the halls, the bus automatically knows to go to the peace room at the time set, say every Friday morning from nine to noon. Principals and psychologists in schools that have peace rooms see the results in lower rates of violence. Start with what's doable.