Capt Kwok, I can understand that, however, the AI will not (or at least did not use to) increase his war production at any time unless there is declaration of war from either side which gives a human player an advantage over a AI player. It just needs to be tweaked in order not to give advantage to a human player. That could be say, breaking of treaties, increased intel, but most important for AI player to at least increase some war production and research
IMHO
A human knows what he's going to do to a AI player, the AI is not that bright, thus a tweak or two
just some ideas mac