Sing a poor  

Not sure about the rest of the world.

But US pilots are trained on how to work the wx radar, how to deviate from set course, talk to control ask for better vector around thunderstorms, and know how to turn the course knob on the ehsi and twist the heading bug.

I guess that's too complex a task for foregin pilots grasp on big jumbos they can barely manage.

Beware who you fly with when flying overseas.  Some just plow right thru no matter what wx lies in front.....

https://www.youtube.com/watch?v=0UYNFthOx1o