Not for a good while yet. Between continental drift and naturally rising sea levels, several countries with coastlines are expected to be broken up or disappear in about 100 million years.
Maybe, or maybe not. You could say that almost every single generation based on what goes on. Not happy at ALL that Obama won, but another four years isn't enough to make or break a country...is it?
I think that there are nearly 200 nations to date, many of which are not in the greatest condition. When you say "this country" you are leaving a broad range of countries to be commented on. Please be specific.