From what I understand it is supposed to be;

Variants of concern, Active variants, Covid Rates, Numbers Vaccinated, Testing Capability ie Varient Testing and Political Decisions.

I personally don’t see Turkey opening in the Summer, more to do with as much as the numbers have come down, Scientists don’t believe the curve is accurate. It is said Turkey reduced testing, speaking to colleague in Turkey they say it’s bad but vaccinations are up. What’s interesting is Turkey remains on the red list for a lot of Europe so clearly they dont all trust Turkey's stats. It was also a transit route which made it a prime reason for going Red.

The UAE, originally it was bloggers then the transit route for people from South Africa. They have a high rate of vaccination and generally you could say the numbers are low compared to Spain. The concern is of variant’s which is probably aided by the South African and then Indian variant. It was a transit route and the UAE is reliant on Indian / Pakistani / Philippine migrant workers and therefore initially had poor policies. Recently it has had the lot on lockdown and I would assume making an effort with variant testing since they want the Europe market back now. The Asian market was great while Europe was closed, but now its open, it really wants to open. I expect them to go Amber probably October based on Europe fully opening its borders and assuming no new variant’s.