The war is indeed not over for years. I'm not sure if I will build an airforce. I'm sure that in the long term they'll be very effective in solving stalemates such as Porto or the long forgotten Vladivostock, but then again, there is no enemy airforce to speak of and I've been managing pretty well with the few planes I have I've just recently begun using my bombers in the USA, hence the change of mind of the story teller. Although I've started using my airforce, they make only a small difference, I'm nowhere near divebomers and still flying Biplanes.
Update possibly later today.