How to check if iPhone's current location is within a specific region with mapkit

In my iOS app, a mapkit object displays the user's current location and zooms in on it.

I would like to put that code into an if statement so that it will only happen when the user is within a specified geographic region (a specific country,开发者_开发技巧 city etc).

Any help will be hugely appreciated.

Thanks, Roy

Some Resources I found useful.

CLLocationManager Class Reference

CLRegion Class Reference

Core Location region monitoring