UPDATED: The Turnbull government faces a possible constitutional crisis after Deputy Prime Minister Barnaby Joyce was told he could be a citizen of New Zealand.
Malcolm Turnbull has ruled out any further action on same-sex marriage if the High Court strikes down the government's national postal ballot.
Tony Abbott's message was a shot across the bow for Malcolm Turnbull: "It's obviously a dramatic loss of discipline inside the government and it's a serious attack on the authority of the leadership."
Australia will need to build a massive "cathedral" to kick off the biggest defence project in the country's history.
Labor says the Government's proposed citizenship changes are a "massive over-reach" and will be opposed in parliament.
Two senior cabinet ministers have rejected suggestions Malcolm Turnbull's job is on the line as restless coalition MPs threaten to tear the government apart on energy policy.