I really wish we had the "join ongoing war" in the base game rather than having to buy rise and fall to use it.

Awesome and realistic

I am sure that this mod works with AI+. Recently I just succesfully started a game with exactly this mod and the steamversion of AI+.
Are you sure that the problem is not caused by something else? There is a load order bug caused by Firaxis. After downloading a community patch some mods will work again.
You can find it on https://www.reddit.com/r/civ/comments/7x8l5g/civ_6_rise_fall_dlc_momentillustrations_database/

For some reason this mod doesnt agree with AI+. AI+ got updated just a few days ago. Would rock if this and AI+ would work together =).

This modification should be compatible wih Rise & Fall now. Let me know if you have any problems.
Now I have to play rise and fall myself to see if I can make any new diplomatic improvements for the new addon.

Thanks!

ty broo