 In the 2015 – 16 budget , defence spending was A $ 31 @.@ 9 billion or 1 @.@ 92 % of GDP , representing the 13th largest defence budget . Australia has been involved in UN and regional peacekeeping , disaster relief and armed conflict , including the 2003 invasion of Iraq ; it currently has deployed about 2 @,@ 241 personnel in varying capacities to 12 international operations in areas including Iraq and Afghanistan . 
