As the Khmer Rogue used to say: "Kill one monkey, scare ten."
If Qatar is whipped into line, ten other terrorist supporters will dive for cover, not wanting to be next.
If you are going after state supporters of the Muslim Brotherhood, then Turkey (Erdogan himself) IS next.
Erdogan flashing the Rabia hand sign of the Muslim Brotherhood (whose leadership now live in Turkey under his protection):
Yep. He just got his chain pulled. Did we see the Gulf Oil strings moving his actions recently.