I don't understand the AI actions.
So far I have had three wars. All three started by the AI. I crushed two of the AIs and left the other one mostly intact.
I agreed a declaration of friendship with Rameses and Bismarck. Oda (of Japan) attacked Ramases. I was ready to help but Rameses never asked. I did not want to start any war.
Eventually Bismarck denouced Oda and I also denounced Oda. Bismarck then declared war on Oda and asked me to join. I agreed however after 10 turns so i could get my army in poition.
I monitored the war carefully and neither of my friends lost any ground. I gave Rameses 1000 gold to help him fight Oda.
However the very next turn Rameses denouced me!!!
The reason given is "your friends found reason to denouce you", even though no else has denouced me.
What is going on?