Are NDAs a safe thing to do when hiring out of the country? I'm hiring freelancers to do some mobile programming work, and they reside in France. They have, very kindly, signed the NDA I provided for them and seem trustworthy - the NDA also has a clause regarding other countries (that any disputes will be settled here, in the United States).
My questions is, how much can I trust someone from another country to abide by a United States NDA?