I think that the German situation is a lttle bit underrated in Twilight struggle.
Time ago, during a fan contest in Italy, I proposed these two cards (of course they could be better, I rapidly create them) related to DDR and Stasi history:
As far as I know, immediately
2 op, USA, Late war
Remove up to 3 USSR influence from East Germany and Hungary and add 1 USA influence in Austria.
(The quote is referred to the famous Schabowski's 1989 press conference.)
The shield and the sword
2 op, USSR, Early war
If the URSS military track is not at zero, the USA cannot add influence in East Germany. Otherwise, each USA influence added as operation costs exactly 2 operation points.