But I'm NOT AT WAR with anyone. I mobilized for my ill-fated invasion of Greece. Then, when peace was made, I couldn't switch back to normalcy. It has been this way since 1902 (it is now 1965 AD). I am at peace with everyone, although the Greeks are furious with me.
I wonder, if you are a militaristic civ (which i am: Japanese), if that affects it in some way.
Oh well, I couldnt very well finish the game without any peacetime improvements, so i just wont every mobilize my econ again.