I'm currently playing with YnaEMP, 34 civs, some other mods but none changes diplomacy (maybe the Make Spies Great Again Mod, but I dont think it's related to War Penalty). Already met the whole world, and got into the chain of DoFs that has been going on between AIs, resulting in lots of DoFs (15+ I think). Then AI Darius asked me to join a war against Attila, I asked for 10 turns period. The time comes, I agree to the deal and DoW Attila, then most of my friends just backstab me, and the "someone they like more denounced you" chains more backstabs (as well as neutral denounce), all that with just one DoW, no cities taken at all. Is this normal? My military is ranked 5-6 out of 34 so I think it's not the reason.