[R] ISO country codes available in R's {map}?

[Mark Van De Vyver]

Hi
Does any one know wether it is possible to get the Country codes from the
Map package - I've not found anything in the docs and only seen a post re.
how to get country names.  I'd like to programmatically marry some data
indexed by ISO country code to the map package contry names.  If not then
I'll need to hunt for a listing and try and marry that to the {map}
names.....

TIA
Mark