French President Emmanuel Macron has called for stronger action in the fight against climate change, as he hosted world leaders for talks two years to the day since the Paris agreement.
"We are very far from the goal of the Paris agreement of limiting the rise in temperatures to below a two-degree threshold," he told Le Monde newspaper.
"Without much stronger mobilisation, a jolt to our means of production and development, we will not succeed," he warned.
Mr Macron's comments came as leaders met in the French capital to discuss the trillions of dollars of investment in clean energy needed if the climate deal is to stay on track.
The talks were overshadowed by US President Donald Trump's decision in June to pull out of the pact, which had taken nearly 200 nations more than two decades to negotiate.
Mr Macron yesterday reminded Mr Trump of his responsibility to history over his decision to quit the agreement, in an interview aired on CBS.
"I'm pretty sure that my friend President Trump will change his mind in the coming months or years," he added.
Meanwhile, the World Bank said it will no longer finance upstream oil and gas projects after 2019, apart from certain gas projects in the poorest countries in exceptional circumstances.
"As a global multilateral development institution, the World Bank Group is continuing to transform its own operations in recognition of a rapidly changing world," the bank said in a statement.
"The World Bank Group will no longer finance upstream oil and gas, after 2019," it added.
Minister for Communications, Climate Action and Environment Denis Naughten is representing Ireland at the summit.
The summit will focus on how to finance the move away from fossil fuels and the measures needed to adapt to dramatic changes already occurring due to global warming.
Another key focus of the summit is to develop a global action plan to reduce greenhouse gas emissions from international shipping in 2018.
Shipping is a growing source of greenhouse gases, projected to account for more than 17% of global emissions by 2050.
Mr Naughten has said any "international policies to clean up shipping need to be global in scale and scope".