@wittmann:
I agree that the Leningrad NO should go. Germany can� easily capture the city and start building there. Why give it 5 bonus too?
I think that capture a city, or a Capital, should give you a one time bonus. You can plunder a city once, not every day year after year. Now that should put a stop to the back and forth trading of capitals too.
Iron trade with Sweden and Lend Lease convoys should of course give you NO money every turn