Human behavior refers to the array of every physical action and observable emotion associated with individuals, as well as the human race as a whole. While specific traits of one's personality and temperament may be more consistent, other behaviors will change as one moves from birth through adulthood.
diplomacy(Noun) The art and practice of conducting international relations by negotiating alliances, treaties, agreements etc., bilaterally or multilaterally, between states and sometimes international organisms, or even between policies with varying status, such as those of monarchs and their princely vassals.
Defining Tact and Diplomacy: The ability to assert your ideas or opinions, knowing what to say and how to say it without damaging the relationship by causing offence. Tact is the art of making a point without making an enemy. - Isaac Newton. Diplomacy is the art of letting somebody else have your way.