Tony Abbott was Speaking at an event in the U.S. hosted by the conservative think tank Heritage Foundation.
Tony Abbott, now a member of Parliament, told a group of climate change deniers Tuesday that Australia would not have joined the treaty without the United States.
"It brought Western civilization to this country. It brought Australia into the modern world," Tony Abbott said.
Around 250 asylum seekers face deportation to remote Pacific islands.
Australian voters rejected the chance to become a republic in a 1999 referendum.
Abbott was defeated by communications minister Malcolm Turnbull in a Liberal party leadership vote.
Australia will also extend its airstrike campaign against ISIS into Syria, [rime minister Tony Abbot has said.
The comments from Tony Abbott have sparked fury from an Australian Jewish body.
Two Australians and one Brazilian among eight traffickers executed as Australia says it will recall ambassador to Jakarta.
Jakarta resists international pressure and orders executions of drug traffickers, including two Australians, to proceed.
27 of 28 government ministers will be out of country on foreign trips to drum up investment.
A vote to declare the positions of party leader and deputy leader vacant was defeated by 61 votes to 39.
Abbott has faced a torrent of criticism in recent weeks over policy decisions, handling of the economy.
The bodies of eight children aged between 18 months and 15 years were found in a house in Cairns
Sydney's city center was on lockdown after a gunman took hostages in a cafe in the financial district
The U.S. and the European Union engaged in "trench warfare" to override Tony Abbott and get climate change on the G20 agenda
The Australian defence ministry confirmed that a small fleet of Russian ships was heading for eastern Australia, ahead of the G20 conference in Brisbane
Australian PM Tony Abbott said he will use an upcoming summit to confront the Russian president over the downing of Malaysia Airlines flight MH17
Australia's hard-line policy is facing increased scrutiny after reports of suicide attempts by mothers in detention