Full Idea
You are waging war? You fear your neighbour? So remove the border markers: then you will have no more neighbours. But you want war: and that's why you set up the border markers in the first place.
Gist of Idea
If you don't want war, remove your borders; but you set up borders because you want war
Source
Friedrich Nietzsche (Unpublished Notebooks 1882-84 [1883], 5[1]145)
Book Reference
Nietzsche,Friedrich: 'Fragments from the period of 'Zarathustra' (v 14)', ed/tr. Loeb/Tinsley [Stanford 2019], p.180
A Reaction
The only reason to demarcate some territory is to keep other people out of it, which is a first act of gentle hostility. The European Union is trying to gradually dismantle the borders. Nietzsche had a creepy liking for war.