They are part of the ISAF International Security Force which includes members of NATO and Nations like Australasia,France and New Zeland. Some kiwi troops are part of a UN program though UNAMA.
Are you sure you know what your countrymen are doing in Afghanistan?
As far as I am aware they are not there as peace keepers same goes for Australasia.The ISAF is not a UN action.
I said NATO because it is easier although ISAF would be a more correct term.
http://www.defence.gov.au/op/afghani.../factsheet.htm
http://www.isaf.nato.int/article/isa...nd-forces.html
http://en.wikipedia.org/wiki/Interna...sistance_Force