Suggestion - Add Threats to Diplomacy - plus other things

[Dunadd]

How about as well as being able to make Offers and Demands in diplomacy also adding Threats (which you could make instead of an offer if you chose). So that e.g you could Demand 'hand over such and such a province, or (Threat) I'll declare war on your kingdom'. Or you could demand an ally declares war on another kingdom OR (Threat) you'll end your alliance with them.

Also how about the option to demand other kingdoms declare war on another kingdom you specify.

And also a demand to an ally to invade a specific province.

And how about in trade being able to establish long term trade deals (e.g Kingdom A gives Kingdom B 500 gold a turn and Kingdom B gives kingdom A 1 iron a turn in return or whatever)? Those kind of trade deals should improve diplomatic relations a bit too if agreed.