From the story: Australia will spend $2.6 billion to upgrade its defensive missiles as the security environment in the Asia-Pacific region becomes more challenging due to China’s assertiveness. The plan — which will significantly increase the range of missiles on Australia’s warships and warplanes — comes as Australia said it will participate in developing hypersonic missiles with the United States and the United Kingdom as part of the AUKUS deal the three countries signed last year to build nuclear-powered submarines for Canberra(CNN). From BBC: Hypersonic weapons are those that exceed five times the speed of sound. They are harder to defend against because of their speed as well as the fact they fly at low altitudes – beyond the line of sight of ground-based radars – and can manoeuvre mid-flight(BBC).
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