ston
Warlord
Sullla mentioned strange relationship behaviour between the AI players and the City States in his second walkthrough (the immortal level one); war one minute, protecting them the next.
In the game I briefly describe here: http://forums.civfanatics.com/showthread.php?t=384738&highlight=city+placement, Montezuma consistently announced that a particular city state was now under his protection in the inter-turn every single time I befriended or allied with one (which I did quite a lot!)
It was too consistent to be mere coincidence and felt a bit 'copy-cat' and weird. In one instance, a military city state asked me for help as Monty was warring against them. I gladly obliged (it's always a pleasure against Monty) and took out a number of his units which were using the ultra-tactical technique of embarking and floating about within my city's 'blast radius', um... The City State then allies with me 'cos they're well chuffed and in the inter-turn Monty declares that they're under his protection

In the game I briefly describe here: http://forums.civfanatics.com/showthread.php?t=384738&highlight=city+placement, Montezuma consistently announced that a particular city state was now under his protection in the inter-turn every single time I befriended or allied with one (which I did quite a lot!)
It was too consistent to be mere coincidence and felt a bit 'copy-cat' and weird. In one instance, a military city state asked me for help as Monty was warring against them. I gladly obliged (it's always a pleasure against Monty) and took out a number of his units which were using the ultra-tactical technique of embarking and floating about within my city's 'blast radius', um... The City State then allies with me 'cos they're well chuffed and in the inter-turn Monty declares that they're under his protection

