> Any suggestions on how to do this in a way that is sensitive / not-offensive? Wouldn't that depend on what culture he is from and what that culture considers

> Any suggestions on how to do this in a way that is sensitive / not-offensive? Wouldn't that depend on what culture he is from and what that culture considers offensive? Either way, I've heard good things about "Accent makeover" classes, so if they are available to him, maybe it is worthwhile to pay for him to take such a course?