Try to avoid throwing red herrings, and be that as it may, and as much as I can imagine the junta might try to distract people with another stupid pogrom, it is very much preoccupied with dealing with protests.
And in any case, an academic from Thailand has written a decent article pointing out the considerations of the various nations in Asean and China.
Already geopolitically divided by China's regional assertiveness, Association of Southeast Asian Nations (Asean) is now facing a new fault line from Myanmar's recent military coup.
www.todayonline.com
TLDR:
1. ASEAN is ineffectual, in part many of its members aren't exactly exemplars of democracy, let alone Thailand which is also led by its own version of a military junta.
2. The junta is pretty much entrenched and getting them to do anything out of goodwill is going to be bloody difficult.
3. There is essentially not much ASEAN can do and either way, it is a lose-lose.
Ultimately, the fundamental issue is the relationship between Suu Kyi and the Min Aung Hlaing. Neither liked each other, to put everything very mildly, and Suu Kyi apparently made attempts to introduce more civilian control of the government, which the military has long seen as its retirement job complex and through the government, used the country as a personal piggy bank, running various businesses. Suu Kyi tried to reverse some of that, and the military decided to take back control by force. It is really a half a million strong mafia and it is stubborn as fuck and isn't likely to compromise, as shown by repeated violent crackdowns over the past few decades. There are no good solutions, and bombing the shit out of that place will simply make the entire region a ridiculous cesspool especially when the IndoChina region has long been a drugs and weapons conduit.