"I've never seen the film, and I had NO idea their were so many different versions O_o. I'm going to watch the U.S. cut on here (is it the same as the international version? I'm so confused..), and would be very interested in seeing the Thai and/or German cuts eventually."
Brad Thompson has more knowledge on the subject, but apparently non-Asian territories saw variations of the US version. They usually have different opening credits (and location of such). Making matters more confusing is that the narration at the beggining "Nature may rebel..." has different voices depending on which version you watch, but the rest of the film has the same dubbing!

On the other hand, the Thai version is an entirely different beast.