First thing to do is to send surveyors ( mix from both sides and some neutrals) to make a map that everyone can agree on
THEN the politicians sit down and agree where the boundary is
THEN you send the surveyors out again to demarcate it on the ground
something for that lot in Hermitage to get on with
If its anything like the surveyor who once did a house survey on a property I was going to buy then War will start quickly.
A big subsidence crack was just some loose plaster, tree beside the house was unlikely to cause problem even though roots were already coming through garage floor etc etc.
As he was contracted by the bank I sent them a copy of one a a surveyor mate had done for a beer and a curry.
I was going to demolish property anyway and sell site but had never disclosed this to anyone.
Borders are always imprecise.