Michelle Grattan speaks with Deep Saini about the week in Australian politics.
The sudden exit from parliament of Senate President Stephen Parry has turned into a toxic blame game, in a further sign of a government crumbling into chaos.
Stephen Parry's departure is feeding into the current tensions between the Nationals and the Liberals.
The government has been thrown into a fresh crisis, with Senate President Stephen Parry announcing he may be a British citizen.
Parry, a senator from Tasmania, is the first Liberal to be caught in the dual citizenship debacle.