In a tripartite deal with the US and the UK, Australia has unveiled a plan to acquire a fleet of up to eight nuclear-powered submarines, forecast to cost up to $368bn between now and the mid-2050s. Australia will spend $9bn over the next four years. From this year Australian military and civilian personnel will embed with US and UK navies, including within both countries’ submarine industrial bases. From 2027 the UK and the US plan to rotate their nuclear-powered submarines through HMAS Stirling near Perth as part of a push…