What happens when a global economic power spits the dummy?  It has been a pertinent question ever since China decided to pull out of a number of upcoming and crucial global meetings. And in the process, enrage many of its neighbours.   It all began when China released a new map just over a week ago.  Today, international and political editor Peter Hartcher, on what impact this new map will have on Australia, and the sort of havoc that geopolitical tantrums have unleashed in the past.Subscribe to The Age & SMH: https://subscribe.smh.com.au/See omnystudio.com/listener for privacy information.