Both internal conflicts.
There really is no such thing as an internal conflict anymore. What starts out by one is usually involves help by outside forces.
Rule one, either you help your side as your enemy will be helping theirs.
Rule two, how much do I care about my side and what do I stand to lose.
In the modern world borders are just lines on a map, the integration time of what is happening further away affecting yourself, is getting smaller.
As for Dresden, RIP, but tough, everyone wants to be a revisionist. There is one sad fact, war is a disgusting foul sometimes necessary thing (human nature -> animal nature) The moral question of how far you go in ending it as quickly as possible, to extending it is a hard one.
Another words the possibility of x people dying in short amount of time versus 10x amount of people over a longer period.