I've never gone over the 25 infamy limit before but I recently did as the UK when I gambled that I could justify a war cheaply. I was the number 1 military leader in the world at the time, I think I was around 500 score at the time. Russia went to war with me and later France as well. I'm wondering just how strong do you have to be to make the AI not go to war over the badboy limit?