I'm afraid he doesn't realize he's a real annoyance? Nobody
sat him down and explained it to him.
I recall that you and I went a few rounds in the annoy thy neighbour ring! The cessation of violence had an immediate effect and peace has lasted. Imagine what would have happened if a domino effect had ensued. It would have travelled around the world twice by now I'm sure.
I sincerely hope that all is well with you and yours, H.