In the space of a month or so, war with China has gone from being the stuff of paranoid science fiction plots to a serious political topic. But how seriously should the rest of us take it? Today on The Signal, we ask why we're suddenly discussing a war with the world's biggest military. And if it ever did happen, how would our own military strength and the strength of our allies measure up? Featured: Dr Bates Gill, Professor of Asia Pacific Security Studies at Macquarie University