I think there should be two game modes for Hoi4, historical and sandbox
In historical game-mode the AI tries to act as closely to real history as possible. So for example Japan declares war on the USA by Pearl Harbour
In sandbox, the AI tries to simply win. So using the above example, Japans AI makes a decision whether or not to invade the USA based on its calculated chances of winning.
In historical game-mode the AI tries to act as closely to real history as possible. So for example Japan declares war on the USA by Pearl Harbour
In sandbox, the AI tries to simply win. So using the above example, Japans AI makes a decision whether or not to invade the USA based on its calculated chances of winning.