On a lighter note how the hell do you understand the ruskies , usbeks and the chinese...
As strange as this may sound but the Russians, Chinese, Iranians, Kenyans, Rwandans(?), Angolans, Nepalese etc has the best R/T of them all. Reads back exactly what was said and executes accordingly as well. Best R/T I have ever heard was from an ex Air Mozambique pilot flying for Astana. Go figure.