The way the situation on the ground in eastern Ukraine is evolving, such as if the US provides the Ukrainians with 'Defensive Weapons' I can see that escalating exponentially. Probably won't become a threat though. However its probably worth keeping on eye on developments.
As for home grown threats, I can't see any major civil war, but I am expecting more 'Lone-Wolf' Attacks like the Charlie Hebdo, Copenhagen shootings..It's a Sad world.
That's why I like to get away to the woods!