What kind of radar tracking capability would Myanmar have, would it be possible to sneak up through their airspace?
Having flown in Burmese airspace on quite a few occasions (in a B777), (both East-West and North-South) in virtual radio blackout for an hour or more, I'd say it would be possible to take half the commercial airline fleet of western Europe in line abreast through that area without anyone being the wiser.
And mods, that is not meant to be flippant. Any pilot who has flown over those routes would agree with my sentiments, if perhaps not my overstatement.