Playing on full of resources terra map, starting on any continent, 18 civs, standard size, no goodie huts. I was williem orange and ended up around the equator in the "new world" with justinian just northwest of me, alex further north, ghengis southwest and monty far south. Wow, three ultra aggressive leaders plus justinian is no slouch. Monty founded hindu, which spread to ghengis, then to me so I adopted to keep everyone happy. My power rating wasn't tops, but I was high, probably 75% of the leaders ghengis and alex. I figured monty and ghengis would be the threats so had most of my garrison down there as I expanded and prepared for a maces and trebs war. Then out of no where, alex, who is last in score while I am first with the strongest economy, tech lead and in size, alex dows me with a stack of 5 phalanxes. I'm playing on noble so that's a decent size stack for an AI to attack with this early. What surprised me was alex didn't go for justinian- a weaker, closer foe. I fended him off without much trouble after whipping a couple archers in addition to my northern garrison. Then something even crazier happened. I missed founding Confucianism by about 3 turns, and wanted a shrine badly for my economy so I founded Taoism. It then spread to justinian and alex and a bunch of my cities. Now I had a tough choice. I had one hindu city, 3 toaist ones and two neighbors of each religion. Then justin demanded I convert so I did and built large garrisons for the south in case my switch pissed off monty or khan. It didn't. But a few turns later out of no where alex comes back and dows me again! I share his frickin religion, have double his score, have 80% of his power and he decides to drop 8 phalanxes on me. Again I fought them off, but it was harder, as I was not expecting an attack from my spiritual brothers. So what's up with that? Is the AI really smart enough to notice my northern cities lightly defended, despite my overall strength, and backstab? What other leaders tend to do this?