sav
King
A cross between what gorn and corvex suggested would be good - kinda like privateers were without an obvious nationality, you could have units like that - or you could even frame other nations perhaps by making them appear to be Babylonian when you're playing as America, or Aztec when you're English, etc. That could be one way of incorporating state sponsored terrorism, in addition to spies... Or even like in Civ 2 when you captured a city, you got guerillas popping up; though it sounds like this kind of thing is covered by the new ways in which culture works in Civ 4.
The idea of terrorists spontaneously occuring when you neglect city happiness is another aspect altogether that would have to be handled differently, perhaps in conjunction with the civil war ideas espoused elsewhere.
And as for the population thing, the population city size numbers are representative - in desperate times we have no problems whipping 50,000 citizens into rush building a unit; a ridiculous number if taken literally. Your people would go bananas under ANY form of govt if this really happened - but its REPRESENTATIVE in Civ. If I lose one population point for whatever reason, its hardly a concern, in the game... so an attack like 9-11 to be effective in civ would have to result in something like a 5pt city size loss to be remotely equivalent, and then only in combined with some unrest, economic hit - and then your reponse would also affect your rep.
The idea of terrorists spontaneously occuring when you neglect city happiness is another aspect altogether that would have to be handled differently, perhaps in conjunction with the civil war ideas espoused elsewhere.
And as for the population thing, the population city size numbers are representative - in desperate times we have no problems whipping 50,000 citizens into rush building a unit; a ridiculous number if taken literally. Your people would go bananas under ANY form of govt if this really happened - but its REPRESENTATIVE in Civ. If I lose one population point for whatever reason, its hardly a concern, in the game... so an attack like 9-11 to be effective in civ would have to result in something like a 5pt city size loss to be remotely equivalent, and then only in combined with some unrest, economic hit - and then your reponse would also affect your rep.