Wars start up not always along clear territorial lines, they start in cities too and are caused by politics.
If you look at the timelines of wars, this world is due for another soon.
When people's emotional passions get superheated, they go to war.
There is much unrest and not just in the US.
I have also read of a split up plan that would give people 5 years to move or stay where they are, and the government would buy out their properties etc...
The talk was about splitting the US into 3 countries, an east coast , west coast, central US, look at an Election house map to see how the politics has divided us up.
The US is I think no longer going to be a united world power, the two sides don't agree on much anymore.
Large land mass countries require a powerful strong leader such as China and Russia have to keep them from falling apart.
I also think the democrats are going to continue trying to re educate republicans by the media, schools, laws, etc... just as they have been trying to do.
Democrats dont just attack Trump, they attack Trump supporters with threats.