Preventive diplomacy
Preventive diplomacy is action to prevent disputes from arising between parties, to prevent existing disputes from escalating into conflicts and to limit the spread of the latter when they occur.
Michael S. Lund, the author of "Preventing Violent Conflict: A Strategy for Preventive Diplomacy", identifies it as "action taken in vulnerable places and times to avoid the threat or use of armed force and related forms of coercion by states or groups to settle the political disputes that can arise from the destabilizing effects of economic, social, political, and international change."