US Military Vehicles on Exercise in Australia US Army and USMC stem the tide against Chinese ambitions in Asia-Pacific Australia has long enjoyed a strong defence relationship with the USA. It was strengthened by Australian support for the USA's Global War on Terror, specifically the operations in Iraq and Afghanistan that turned into long-running counterinsurgencies. Today the USA and Australia have jointly turned their attention to the next looming threat, that of a belligerent China that is investing heavily to modernise its People's Liberation Army.
