French President Emmanuel Macron is not afraid to speak his mind, even when it means disagreeing with the President of the United States.

In a joint meeting of Congress on Wednesday, Macron criticized the Trump administration's withdrawal from the Paris climate accord and their inaction on climate change.

Given the long-term effects of climate change, Macron said he is confident that even if the US officially withdraws from the Paris accord, America will soon be back.

"I'm sure, one day, the United States will come back and join the Paris agreement. And I'm sure we can work together to fulfil with you the ambitions of the global compact on the environment," said Macron.

The comments flew right in the face of the Trump administration's stance on climate change, which is largely one of climate denial.

"I believe in building a better future for our children, which requires offering them a planet that is still habitable in 25 years," Macron continued.

"Let us face it: There is no Planet B."

The remarks were met with cheers, although The Hill reports that the Republicans in the room "did not applaud every line."

In his speech, the French President made it very clear that he was concerned by the United States' isolationism and "America first" mentality.

"Let me say we have two possible ways ahead. We can choose isolationism, withdrawal and nationalism. This is an option," Macron said.

"It can be tempting to us as a temporary remedy to our fears. But closing the door to the world will not stop the evolution of the world. It will not douse, but inflame, the fears of our citizens. We have to keep our eyes wide open to the new risks right in front of us."

And while Macron had plenty of criticism, he also expressed hope that the US and France could work together on this pressing issue.

"On this issue, it may happen we have disagreements between the United States and France. It may happen, like in all families. But that's, for me, a short-term disagreement. In the long run, we will have to face the same realities, and we're just citizens of the same planet," he said.

"Let us work together in order to make our planet great again, and create new jobs and new opportunities, ones of guarding our earth."

Now the big and unresolved question: Will Trump listen?

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