Do you have a will? In which country? Do you need one in both or several?
For some examples of why you might need to consider these options start with Angloinfo's International Wills and the U.S. Expat Abroad - Don't Be Duped!
Read the Tax & Banking Disclaimer.
U.S. Estate and Gift taxes are considered "transfer" taxes and not "income" taxes and the tax is asserted against the person making the transfer. The U.S. Estate and Gift taxes apply differently to U.S. persons and non-U.S. persons, and some of the rules depend on if the non-U.S. person is considered a resident (which are not the same as traditional...