Possible Clues:

• Kingdom
• Military operation opens with chaos decapitating those in kingdom
• In my broadcast from vault, we don't have one but the neighbours do
• Cast my anchor in Norway, say
• Sovereign state
• My surrounding on curved gateway for UK, say
• Anchor at sea in my domain
• Orlando's carrying on — playfully teasing, as a rule
• Cash point replaced by chief — it requires a sovereign
• As a rule, it has involved harmony around head of Commonwealth