Everything that Muslims king did after upturning Caliphate was on their own sweet will. Islam had no links with it. History has only seen CRIMINLA KINGS FIGHTING CRIMINAL KINGS. MUSLIM KINGS were also CRIMINALS in eyes of Islam and Islamists.
Islam never supported, never approved of any Muslim Kingdom. Every Muslim King only curtailed Islamists because Islam and Islamists historically exhorted Muslims to rise and give every king a chase