As far as I know, you keep your FAA type ratings indefinitely without recurrency training.
You require regular recurrency training if you fly for Part 121 operator (and in this case you need the FAA examiner).
(Part 121 means US airline)
If you received your national license based on FAA license (convertation), then you have to maintain currency based on your country stardarts (number of sim sessions per year, national examinor). I believe this is the same if you use validated FAA licence to fly in the foreign country (basically, FAA do not care, how you maintain your type rating unless you fly for Part 121).