True, True. But if I am playing with a 'peaceful' AI next to me and deliberately foster good relations I would hope that I could let my guard down a little. e.g. I had Roosevelt with me on an island. I had quite a few archers and chariots, shared a religion and was donating a healthy resource. I was around plus 5 or 6 in relations. Then quite soon after he researched Bronze working he went for me. eg. in another game Frederick came sailing over from his lonely island. On first contact he must of had a city catch my religion, as he immediately converted to my religion. He also immediately asked for a trade deal which I agreed to. I was only just below him in power at this first contact. Next go he declares war! Only thing I can think of was a surplus of troops. I defeat 2 loads of units he lands and he takes peace. He immediately asks for that trade deal again, which I give him. Relations look rosey now. After the 10 turns of peace are up immediate war again!