My crazy mom says she's looking to move to Uruguay because when the nukes start falling they will most likely not have a ton of fallout to deal with.
I'm gonna run toward the light in that kind of scenario, personally. Nature will rebuild. In a WWIII scenario, the winner is evolution. Life will, uh, find its way.
Behind the Bastards had a Christmas special non-bastard episode on the Tupamaros of Uruguay and Pepe Mujica. It does seem like they have some decent politics there.