From Civilization VI Wiki
Dynamic Diplomacy in Civilization VI. Interactions with other civilizations change over the course of the game, from primitive first interactions where conflict is a fact of life, to late game alliances and negotiations.
Info on Diplomacy
- Diplomacy made to focus less on Warfare as time goes on.
- There's a new "Gossip" system. When you interact with various Leaders, you gain a trickle of information about their agendas and plans. As you trade, you can get gossip information, and from each interaction gain more knowledge about other Leaders. Diplomacy begins very informally, with the sending of Gifts, basic trading and Declarations Of War. Eventually it becomes more formalized and more complex as embassies and Ambassadors spread across the world.
- There will be more than one way to declare war and if you declare an unjust and Surprise War, you will incur an additional +50% Warmongering penalty, however, if you declare a justified war, the penalty is nowhere near as large.
- Note that the diplomacy screen gives information on how to improve relations with a specific Leader