I have to say I've been pleasantly surprised on more than one occasion by the AI and the actions the AI's taken during wars against me. So much so, that several of the AI's manoeuvres have ultimately cost me victory. As an example, in my current game I'm playing as the Americans (randomly chosen) on a standard sized "snaky" Achipaelago map on Prince level and was leading in points with Elizabeth of the English closely behind. As the game has neared towards its climax I would say that it has essentially become a race to victory between the two of us. Now, she started the space race first, ringing alarm bells everywhere considering I hadn't started the Apollo program yet! My immediate reaction was to bribe someone to go to war with the English knowing full well that none of the other remaining civs had a hope of winning a war against them. So, I coerced the Russians into action in a vain attempt to stall the space ship construction and they soon pleaded with me to join the war. I did, thinking I could continue to build improvemnts and keep the English at bay and maybe at the same time pillage a few of their resources. All was going fine until the English somehow managed to sneak 2 transports and 2 destroyers round to the back of my empire (we're on separate land masses) and unload a mass of tanks, marines and artillery. Since then, I've lost one city and I'm in a small crisis dealing with this invasion. My fleet, consisting of destroyers and a carrier and fighters, is sitting off the English coast a long way away from immediate relief help. My plan has majorly backfired. I picked an archipaelago map because I love having to rely of the naval aspect of civ games. Based on previous civ installments I didn't really expect too much of a naval challenge and consequently thought my advanced homeland would be safe from anything. Well I'm pleased to say I've been so wrong and although I'm currently paying the price for complacency, I won't treat the naval AI so lightly the next time. What started as simply pillaging my sea resources eventually turned into a full scale round the back invasion. In Sirian's interview over at Apolyton I'd read about last minute improvements made to the naval side of things, but I honestly didn't really believe it. Great stuff.