this is actually quite reasonable, even if i think it's something the united nations ought to be doing, rather than the turks themselves.

there needs to be some kind of buffer zone, in the short term. a 30 km buffer is not the turkish invasion of syria that people are worried about....

https://www.independent.co.uk/news/world/middle-east/turkey-syria-safe-zone-border-erdogan-trump-withdrawal-troops-kurds-a8729126.html