What’s going on with Australia’s latest bruising political leadership battle?

Once again the knives are out down under, Canberra is living up to its reputation as the world’s back stabbing capital and now Australia’s prime minister Malcolm Turnbull has issued an ultimatum – threatening to step down on Friday if his rivals push through another leadership vote. The entire parliament has been suspended while the government tries to deal with the latest crisis. Our foreign affairs correspondent Jonathan Miller reports.