Three strikes and she's out? Greens risk war over Rhiannon

• EXCLUSIVE

The Greens have twice censured rogue senator Lee Rhiannon for disloyalty and fear she will continue to destabilise the party if they impose a similar sanction for undermining their school funding negotiations.

Pyne suggests gay marriage still possible

One of the Turnbull government's most senior ministers says legalising same-sex marriage in Australia could happen "sooner than everyone thinks".

Bob Brown says Lee Rhiannon could be expelled from Greens

Rogue Greens senator Lee Rhiannon could soon be expelled from the party after all of her federal colleagues made a formal complaint about her conduct during recent school funding negotiations.

Chileans ramp up extradition request for murder suspect

Turnbull government faces mounting pressure to grant a Chilean extradition request for a Sydney woman accused of involvement in kidnapping, torture and murder.

Former Defence officers warn of climate impacts

Former Defence Force officers, including a former chief of the Australian military, have warned that climate change will emerge as the defining security threat of the 21st century and urged governments to step up their responses accordingly.

Liberal MPs defend tough citizenship test

Liberal politicians from non-English speaking migrant backgrounds have defended toughened language requirements for aspiring Australian citizens.

Bishop welcomes charges against Bali bombing architect

Foreign Minister Julie Bishop has welcomed the decision by United States prosecutors to file charges against Riduan "Hambali" Isomuddin, the alleged architect of the 2002 Bali bombings, which killed 202 people including 88 Australians. 

Barnaby Joyce warns Tony Abbott could damage government

Deputy Prime Minister Barnaby Joyce has warned Tony Abbott that he could be doing more to help the Turnbull government as the former prime minister leads a backbench charge against the Finkel energy recommendations.

Cabinet ministers rally behind Turnbull on energy policy

Senior Turnbull government ministers have mobilised in the wake of Tuesday night's heated meeting.