[CyborgMoses]

Using events in one game to justify actions in another because you are playing against nations run by the same person is seriously disruptive. For instance, if one were in a winning position in one game and a losing position in another, one could trade resources to another nation in game one and have a nation run by the same player in game two trade resources to your embattled nation there; this would be totally unfair to the other players in game two. Basically, sharing anything between games, including grudges against nations which happen to be run by the same player, is very disruptive and makes the game less fun.