I'm not sure about how far up national jurisdiction extends but I expect it's more than 100000 ft. In which case you will be expected to get permission from (or at the very least inform) each state the balloon passes over.
Each country publishes a document called the "AIP" that includes (amongst a lot of other stuff) who and what you need to ask to get permission. Some of these are online but the easy solution is to talk to one of the professional flight clearance agents, eg
Overflight flight clearance specialists
Good luck - I note that your latitude includes Iran. I doubt they will be very keen
The other approach would be to make it very small and light and just do it ....
Bill