International "Joint Commission"s?

There are actually JCAHO approved hospitals that can be found overseas in Thailand, Philippines, as well as other countries.

There is no universal "Joint Commission" as you call it for health care, each country can set their own rules. And even in the above listed countries, the facilities still have to meet the requirements of that particular country as well, since they are operating under their laws.

Approval of health care or the providing of health care has nothing to do with the requirements of JCAHO as far as issuing credentials to a hospital facility or even nursing agency. Those rules are never going to change, other than getting stricter.