I went to delete a GKE cluster and after some time it gave me the error:
Google Compute Engine: There is no peering (gke-16b473dddf3526a46ffd-76d2-f9f0-peer)
for the network (GLOBAL:global/PROJECT:redacted/NETWORK:dev).
Now the cluster is stuck. It can't be deleted and I can't create a new one with the same name. I can't recreate the peering either as I do not know what the project is for the peer.
Such a coincidence, the same happened to me today and could not find any information about it except the question.
I solved the problem via this hacky way though: