That’s not a serious question – they are both clearly on the Cambodian side of the border. But it is a question you can expect from the immensely silly Nation newspaper in Thailand, and other crazy nationalist folks. (See here for a nicely-worded rebuttal to a Nation editorial from Ambassador to Cambodia Julio Jeldres.)
In spite of news reports that all military personnel on both sides had withdrawn from the devastated Ta Moan Thom temple….”they’re ba-ack!” Thai troops have re-entered the temple compound, constructed gates, are refusing to allow entry to Cambodian troops, and are reportedly constructing new border markers which move the border onto the Cambodian side of the temple.
Cambodia, of course, rejects the Thai claims to ownership, but aren’t (probably can’t) propose anything more forceful.
At this point, it is very clear that neither side has a plan. They are making it up as they go along, wriggling for a slightly better position, like 14-year-old boys clinched in a sublimated homoerotic wrestling contest in the school’s playyard.
The difference is that these guys have guns. (Actually, if you live in the US as I do, that is very likely not a difference).