Prime Minister Scott Morrison has returned to Australia after a dramatic week in Europe to attend the G20 conference in Rome and the COP26 climate change summit Glasgow.

Mr Morrison intended to use G20 to take aim at social media platforms, but a doorstop interview with French President Emmanuel Macron, where he accused the Australian Prime Minister of lying over the doomed submarine deal, quickly dominated headlines.

Today on Please Explain, chief political correspondent David Crowe joins Nathanael Cooper to unpack a dramatic week in foreign relations.