Japan’s prime minister touched down in Australia on Sunday with a set of shared anxieties – about Trump, China and the fragility of supply chains that the two insular nations have long relied upon – to which she sought some small relief. By the time she departed, Sanae Takaichi and Australian Prime Minister Anthony Albanese had signed an economic security pact, unlocked nearly US$1 billion in critical minerals funding and laid the groundwork for what observers describe as the most comprehensive.