peacekeeper
//ˈpiːsˌkiːpər//
Noun
peacekeeperSingular
peacekeepersPlural
1
A person or military force deployed to maintain or restore peace in an area of conflict, especially under international authority.
The United Nations sent peacekeepers to the region to help maintain stability.
2
A person who works to prevent or resolve disputes and maintain harmony, especially within a group or family.
She often acts as the peacekeeper in her family, helping to resolve arguments between her siblings.