Since the end of World War Two, the United States has billed itself as a force for geopolitical good, pledging to champion democracy and international stability. Australia has been grateful to call the country an ally. But the war in the Middle East is the latest in a string of events to challenge this image of the US, which has been rocked even further by actions taken during US President Donald Trump's second term. "What we're seeing is the death of that era ... when the US was a bit of a global policeman," professor of strategic studies at the...