PM talks terror on climate sidelines

Prime Minister Malcolm Turnbull has used bilateral meetings on the sidelines of major climate talks in Paris to discuss the threat of terrorism and the war on Islamic State.

Mr Turnbull was in Paris on Monday to address the United Nations climate change conference, reiterating Australia's commitment to a solid agreement to curb global emissions.

He met with French Prime Minister Manuel Valls and Israel Prime Minister Benjamin Netanyahu on the conference sidelines.

Mr Turnbull had detailed discussions with Mr Valls on the war against Islamic State in Iraq and Syria, before turning to counter terrorism and radicalisation of youth.

Talks with Mr Netanyahu focused on combating IS, the situation in Syria and the history of Islam and conflict with the West.

Mr Turnbull used his national statement to the UN summit to confirm Australia would spend at least $1 billion on climate finance over the next five years.

The funding will be redirected from the existing foreign aid budget.

The impacts of global warming already are being felt and will continue to be so even after we reach global net zero emissions, he told the UN Summit.

Mr Turnbull also committed to ratifying the second phase of the Kyoto Protocol and signed onto a multinational pledge to double investment in clean energy technology, dubbed Mission Innovation.

The agreement of 20 countries includes the United States, China and India and would take Australia's investment to $200 million by 2020.

"We do not doubt the implications of the science, or the scale of the challenge," the prime minister said.

He defended Australia's emissions reduction targets, arguing they were among the most ambitious in the G20 in terms of per-capita emissions.

Shortly after his arrival in Paris on Sunday, Mr Turnbull laid flowers at the Bataclan theatre, where the majority of the victims were gunned down in the Paris attacks on November 13.

Speaking in French, Mr Turnbull expressed Australia's unflinching solidarity with the people of Paris.

The prime minister left Paris on Monday evening to return to Canberra for the last parliamentary sitting week for 2015.