Australia's nuclear option

It's the most significant defence announcement in Australia in decades. After months of secret talks, the US and UK will help Australia develop a new fleet of nuclear-powered submarines. It allows Australia access to one of the world's most exclusive weaponry clubs, and everyone knows the unspoken motivation is to try to contain a rising China. So will this make us safer? Today on The Signal, we explore what Australia's agreed to, and where it might lead. Featured: Stephen Dziedzic, ABC Foreign Affairs Reporter