Russia
They seem to have calculated for such an accident. Remember that they were easily able to get over the WSJ article. Check-in scam continues. Even though all the Western Authorities have all the evidence. How are they better than the GCAA ??? Money makes the world go round.
Thats's why I propose going through the German Pilot Union. They don't sell airplanes to the UAE. They are fellow pilots and probably as good a partner as you are going to find.
Wait, that sad unavoidable crash happened in Russia. Apparently there is no compelling reason for Russia to cover everything up and make sure the Sheikhs don't get offended. I am sure that can change. But for now we have an unexpected Ally. Maybe the bean counters missed that one. I guess that the Russians can at least up the price for silence dramatically. They have closed their airspace before.