mediate

 https://www.google.com/search?q=mediate

compromise

 https://www.google.com/search?q=compromise

settle

 https://www.google.com/search?q=settle

succumb

 https://www.google.com/search?q=succumb

Intermediary

 https://www.google.com/search?q=Intermediary

serve

 https://www.google.com/search?q=serve+peace

https://www.google.com/search?q=deserve+peace