Is there any part of the world where the Red Faith is the official or majority religion? The Lord of Light has a presence in many of the Free Cities, Asshai, and even a limited presence in Westeros.

The priests always engage in incendiary rhetoric against other faiths. It seems like a strangely intolerant religion for one that needs to rely on the majority tolerating it. Is there any government in Essos that has its full support?