Thanks H & H.
The reason I asked the question was because of a recommendation by our dispatcher one night on a flight from LAX to SYD.
We had a passenger who was having chest pains and we were formulating a diversion plan in case the situation worsened.
Even though NAN was our closest suitable airfield, our dispatcher recommended that, if at all possible, we use NOU due to "political instability" in Fiji.
As it tuned out, we were able to proceed to SYD.