Sorry but we closed the border and have declared UDI
That was Southern Rhodesia
Yes correct reference @o-ing
Had to double-check via another reliable source in Wikipedia - which said " However, the white-minority government issued a Unilateral Declaration of Independence (UDI) in 1965 and established Rhodesia, an unrecognised state." I think the latter applies to WA's new status.
I was living in Botswana while the independence war in Rhodesia/Zimbabwe was going on but Botswana managed to pretty much stay peaceful with just the occasional incursion over the border.