Paris agreement cannot be renegotiated: World Leaders

Italy, France and Germany have issued a collective statement dismissing US President Donald Trump's suggestion of revising the global pact, hours after the latter decided to 'get out' from the Paris climate accord.

"We deem the momentum generated in Paris in December 2015 irreversible and we firmly believe that the Paris Agreement cannot be renegotiated since it is a vital instrument for our planet, societies and economies," the leaders of the three countries said in a rare joint statement.

At his White House withdrawal announcement, Trump complained that the global agreement, signed by 197 countries during the previous Obama administration, was "unfair" to American workers that imposed "draconian" restrictions on the US sovereignty and domestic economic activities.

Italian Prime minister Paolo Gentiloni, German Chancellor Angela Merkel and French President Emmanuel Macron reaffirmed their strongest commitment to swiftly implement the Paris accord and urged all the other partner countries "to spead up their action to combat climate change."

"We are convinced that the implementation of the Paris Agreement offers substantial economic opportunities for prosperity and growth in our countries and on a global scale," the three leaders said.