Oz defence spending, page-8

Who we need to be worried about is quite obvious. When you consider any proper war between China and the US will render all organized life on this planet impossible. Who would be the aggressor? Who has form ?

We spend around 2% of GDP on our military
Taiwan who are supposedly to be invaded by China any moment also spend about 2% (not worried)
China spends 1.7%
USA spend 4%