 The exact nature of the Whm Mswt is still unknown.It is often believed to mark a final waning of the power of the centralised monarchy, with Ramesses XI still nominally pharaoh, but with Herihor as High Priest of Amun in Thebes and Smendes in Tanis ruling respectively Upper and Lower Egypt.However, this interpretation rests on the theory that the career of the High Priest Herihor preceded that of Piankh, which has been challenged by Jansen-Winkeln.