US officials have arrested a 21-year-old air national guardsman in connection with one of its biggest leaks of classified documents since WikiLeaks. It has caused havoc for the US and its allies, and a risk to Ukraine's spring offensive.

Also on the podcast: are aged care reforms backfiring? And party politics and the Voice to Parliament: the Liberal Party's shadow Indigenous Affairs spokesperson quit the frontbench this week, so that he can campaign for a ‘Yes' vote.