Congrats on visiting our province Enga. I am sure you'll recommend to others as well.
The "Boomerang Aid" as others allude is somewhat an assistance that PNG needs. The simple fact that our law and order situation in PNG is alarming, we need any form of help to combat this situation from any generous people.
How much of the aid money goes back to Australia for that matter to any other donor country is immaterial. The fact is if these forms of aid changes some peoples life and improve our security at home is more of a tangible outcome that we all should be supporting.
However, if the Australian AIDS are tied aids that adds to the government foreign debts, then the call to scrutinise how much actual money is spent in PNG and consequently how much the PNG people owe Australia is substantiated.