It has not happened and probably would not be the case for decades. Everyone should shelve this together with the list of fantastical stuffs on the to do list which, admittedly, might not happen as well. It is just too common."Going nuclear" nowadays is - to sum it up - idotic. It's OK for countries that have nuclear power plants to keep them running but it's a shortsighted and a huge waste of money to built them and the needed infrastructure for it up from scratch. Like oil fissible material is a limited resource an the consumption already outruns the production by over 50% - the remaining currently comes from recycled nuclear weapons. This means the price of fissible material will rise, if not skyrock in the next years.
2-3 decades henceforth; if the ASEAN countries remain as they are, they will be in trouble.