Archaeologists in Mosul have made a stunning find beneath the Tomb of the Prophet Jonah that was destroyed by Islamic State militants in 2014: the long-hidden palace of ancient Assyrian King Sennacherib. Experts were documenting the jihadists’ destruction of the tomb’s ruins when they located the palace, which dates back to 600 B.C. ISIS had dug tunnels into the site in a search for ancient artifacts to plunder, according to media reports. The Telegraph reports that Iraqi archaeologist Layla Salih found a marble cuneiform inscription of Assyrian King Esarhaddon inside one of the tunnels. The inscription is believed to date...