erm, how exactly does this work globally?
state and zip are required fields. Ireland, for example, does not have zip codes...
full list of such countries: http://hellowahab.wordpress.com/2011/05/24/list-of-countries...
and here is an example from Drupal where it failed the state requirements: https://drupal.org/node/636464
Lebanon, Serbia, Singapore for example do not have state information.