I am an expat in the UK doing my master's research paper on repatriates who leave their organisation within 2 years of returning to their home country.  I spent a year in India and when I returned to the US I resigned within a year, so this topic is close to my heart :-)  Have you also been in this sort of situation? Or do you know anyone who has?  I would love to speak with you if so.  A heart-felt 'thank you!' in advance :-)