Answer:
Diplomacy
Step-by-step explanation:
diplomacy is the art of creating and managing relationships among nations and the art of negotiation is that of forging relationships through agreements.
Diplomacy, the established method of influencing the decisions and behaviour of foreign governments and peoples through dialogue, negotiation, and other measures short of war or violence.
Historically, diplomacy meant the conduct of official (usually bilateral) relations between sovereign states.
When you negotiate or broker a deal between two parties who are angry, this is an example of a time where you have shown diplomacy. When a president sits down to talk to the president of another foreign country in order to try to resolve a tense situation, this is an example of a time when diplomacy is necessary.