Just saw a thread similar to this on ASB, so decided to do a more realistic ATL here.
For a short while in the 1950's the Australian government had an interest in acquiring nuclear weapons. This was on of the reason why Aust let the UK test weapons at Maralinga, etc in central Australia. However it turned out that the UK govt was fairly unwilling to give Australia nuclear weapons tech, as were the Americans. So Aust lost interest in going atomic.
But what if we did? What POD would it require for this to happen?
What effects would it have on Australía's alliance strucutures?