BRUSSELS/BONN (Reuters) - The European Union will provide €800 million (S$1.24 billion) to help 79 African, Pacific and Caribbean (ACP) nations implement a global deal to combat climate change.

The EU support comes as US President Donald Trump is considering whether to carry out a campaign threat to quit the landmark Paris Agreement, which agreed in 2015 to shift the economy away from fossil fuels.

"We, developed and developing countries together, will defend the Paris Agreement," European Climate Commissioner Miguel Arias Canete said on Thursday (May 18).

As a sign of closer cooperation with the ACP group "the EU has announced support of €800 million up to 2020, with around half earmarked for climate action," the European Commission said in a statement.

It said the EU will also provide €3 million to support Fiji, which will oversee United Nations negotiations in 2018. It did not detail how the rest of the money would be spent.

Mr Trump has said he will decide on the Paris Agreement after a Group of Seven summit in Italy on May 26-27.

Mr Canete called the Paris Agreement "irreversible and non-negotiable" as almost 200 nations attend UN talks in Bonn on a detailed "rule book" for the deal.