Really? Think about it. Civilians will outnumber military by a very large margin. If you choke off civilian traffic, you chock off these people's livelihood. Access of water is even worse -- you need to account for herd and farm animals as well. So if you don't want humanitarian disaster, you need to feed and supply these people, and your logistical resources are not likely to be sufficient, and you do need to protect the supply convoy, which may be subject to attacks. If you supply by air, you may not have enough capacity and it will get very expansive. As to quarantine, good luck telling that to children and desperate people. Essentially, this scheme have the same disadvantage as land mines.dude, Lezt didn't talk Genocide maybe you should check his preceding post
So what do you do? You can round up the civilians and put than the concentration camps. Of course people are going to get pissed. So when you leave, revolt will be even worse.
Now, you still think a purely technological clean solution is feasible?