Isolation of regions ( A proposition)

Day 663, 15:31 Published in USA USA by Lawliet94

Article No. 3 of my newspaper
Looking at the eRepublik map (yes, I do in fact use it) I noticed that there are a lot of regions owned by countries that are totally surrounded by other countries. Cut off from the "homeland". Then I got to thinking. How would this work in RL? Well the answer is that it probably wouldn't. Regions totally cut off from the bulk of their country probably wouldn't prosper too well. Especially if it was surrounded by an enemy. In real life we don't have countries dotted all over the place because it isn't feasible.
So here's my idea to pose to the admins. (*gasp* Another idea!!)
Regions cut off from the rest of their country would receive a penalty on productivity, taxes, and defense points. In addition, if all of the surrounding regions are owned by countries at war with you, it would not be possible to move there. If you've noticed, people in RL don't usually like to fly over war zones to get to where they want to go. Right?
Now there are those of you who might point out my eUS citizenship and the fact that right now, implementing this idea would most definitely hurt my countries enemies more than our allies. ( A notable example being Indonesia, or even Russia) And this is true. Right now it would. But that is only temporary. The eWorld will change, as it always does, and it could just as easily be the eUS with a colony in say, Southern Mexico, that this would affect.
So what do you all think? This is open to critique, so feel free to add your suggestions in the comments below! Let's see if we can't get this above 50 votes! 😃

Proposed by Dr. Pwnguin
Adding the concept of a "supply line". If there isn't a link between a region and the region the soldier is fighting from, the soldier has a reduced damage.