Foreign language sorting

I am looking for a method to sort an array of strings, however the 
strings are UTF8 and contain latin and non-latin characters. Is there a 
method to sort a string such that letters such as e with an acute are 
grouped with e without an acute, or even for strings that are made up 
entirely of Thai or Cyrillic characters?
I really hope I don't have to roll my own sorting algorithm.
Thanks,
- Naz.