External.
Because they aren’t fighting with themselves they are fighting an outside source.
The weather changes
In her monologue, Titania describes all the changes that the world has been going through since she and Oberon started fighting. She begins her list of changes in weather by saying "Therefore the winds, piping to us in vain, As in revenge, have suck'd up from the sea <span>Contagious fogs". This shows that the winds have shifted and the world has gone foggy--and that is just the first of all the terrible things she lists. </span>
Not sure where this is from but...
Can you turn on the headlights?
“The single most powerful asset we all have is our mind. If it is trained well, it can create enormous wealth in what seems to be an instant.” “If you realize that you're the problem, then you can change yourself, learn something and grow wiser. Don't blame other people for your problems.”