In 2009, Tom KC0W was in XU and trying to find out about licensing in XZ. He had no luck.
At that time, I found this;
MYANMAR Burma Amateur Radio Transmitting Society [BARTS]
Membership rights temporarily suspended
The Myanmar website looked real nice and all. Looked like they were putting up "a good front" for the world to see.
Here is the thread about it. The story is rather short.http://forums.qrz.com/showthread.php?198889-Looking-for-Myanmar-%28Burma%29-Licensing-Information
I wish you the best of luck! A lot of us need XZ!