Couple Faces Death Penalty for Trying to Build Home in International Waters (2019)

https://reason.com/2019/10/14/how-two-seasteaders-wound-up-m... is the only article I found after this threat.

The relevant international law is the https://en.wikipedia.org/wiki/United_Nations_Convention_on_t... with some borders, the 12sm, the 24sm and the 200sm range. Thailand ratified this UNCLOS. Looks like they missed to put up a flag.