WATCH: Macron calls U.S. exit from Paris climate accord ‘a mistake both for the U.S. and for our planet’

French President Emmanuel Macron said Thursday that President Donald Trump’s decision to withdraw from the Paris climate accord was “a mistake both for the U.S. and for our planet.”

READ MORE: Here’s how leaders are reacting to Trump’s withdrawal from Paris climate agreement

Macron, who said he spoke with Trump after the decision, said Thursday night that the pact signed by nearly 200 countries in 2016 was irreversible.

“We all share the same responsibility: make our planet great again,” he said in a live address.

He called on scientists, entrepreneurs and “responsible citizens who were disappointed by the decisions” in the U.S. to come to France to work together on “concrete solutions for our climate, our environment.”

“I wish to tell the United States: France believes in you. The world believes in you. I know that you’re a great nation,” he said. “I want to say that they will find in France a second homeland,” he said.

READ MORE: Trump just kept his promise to exit the Paris accord. Here’s how he’s handled other international pledges.

Macron, calling climate change “the great challenge of our time,” said France will move forward creating a “concrete plan of action” with “concrete initiatives, particularly in Europe and Africa.”

We all share the same responsibility: make our planet great again. pic.twitter.com/IIWmLEtmxj

— Emmanuel Macron (@EmmanuelMacron) June 1, 2017

“Climate change is already changing our daily lives,” Macron said. “It is not the future we want for our children.”