EDIT: I assume the bonus from SoI is moddable? And that in the next patch PI should remove/severly nerf the diplomatic bonus.
Yes, it's set in static_modifiers.txt.
EDIT: I assume the bonus from SoI is moddable? And that in the next patch PI should remove/severly nerf the diplomatic bonus.
Hold your mouse over the diplomatic skill of your ruler and it will tell you everything about it. Most of the numbers you see in the game work that way. Just hold the mouse over it and you get a breakdown of everything. Great way of learning what does what.