Basically, the Myanmar military junta has been experiencing defeats on the battlefield. Won't be surprise if it all collapses.
Myanmar belongs to China's sphere of influence and I've read in other articles that China has been somewhat supporting the rebels. The US doesn't really have much strategic interest. No idea what a post-junta will look like.
Myanmar's army is losing - and facing fire from a militant monk
And just for some comic relief, if you haven't seen the video yet ...