I wonder what exactly you mean... Borders used to change all the time, until we 1) got a little turned off by industrialized bloodshed, and 2) went nuclear. Now

I wonder what exactly you mean... Borders used to change all the time, until we 1) got a little turned off by industrialized bloodshed, and 2) went nuclear. Now there's a lot of pressure on national borders as some states have become weak, and other stronger, but global politeness is preventing much of a shift in the lines.