Quote Originally Posted by andrewt
I think the AI diplomacy has worked well for the most part. However, there is a very big exception and that is ceasefires. In the end of my Venice game, I was around 40 provinces and was making tons of money and had lots of soldiers. The English were asking for 40k for a ceasefire. They had the British Isles and maybe a few provinces in Scandinavia or Iberia. Needless to say, I said no thanks to the repeated offers and conquered London instead.
Again this is based on their alliance power and not individual power. Check their rating, it is probably 'supreme' due to the alliances they were in, or something along those lines.