Saying “no” to Leonardo DiCaprio is harder than spending an entire night tucked inside a horse carcass. Clint Eastwood couldn’t do it. And how else can we explain J. Edgar? Not even Leo’s own newsboy cap can resist the allure of spending weeks on end perched atop his head.

But not everyone becomes an agreeable automaton when they find themselves in DiCaprio’s orbit. Donald Trump was apparently immune to Leo’s charms when the two met to discuss climate change last December. While delivering a speech at a Yale Climate Conference on Tuesday, DiCaprio finally spilled the tea on their highly publicized meeting.

“We presented him with a comprehensive plan to tackle climate change, while also simultaneously harnessing the economic potential of green jobs,” he said. “We talked about how the United States has the potential to lead the world in clean-energy manufacturing and research and development.”

Though this was the first time DiCaprio directly addressed the Trump Tower rendezvous, you didn’t have to be a member of MENSA to gauge how things went, after Trump pulled the U.S. out of the Paris climate agreement earlier this year.

DiCaprio—whose skills as an actor are often overshadowed by his environmental activism—criticized Trump’s decision back in June. “Today, the future livability of our planet was threatened by President Trump’s careless decision to withdraw the United States from the Paris Agreement,” the actor wrote on Facebook. “Our future on this planet is now more at risk than ever before. For Americans and those in the world community looking for strong leadership on climate issues, this action is deeply discouraging.”

On Wednesday, DiCaprio once again criticized the president and his administration. “We are going to look back at this point in history and, frankly, this administration and certain people are going to be vilified for not taking action,” he said. “They really are.”

DiCaprio cited the recent flurry of hurricanes as evidence that continued inaction in the realm of climate change is potentially devastating.

“These facts have been presented to the world time and time again for decades,” he explained. “Quite simply, we are knowingly doing this to ourselves, to our planet, and to our future, and the cost of our inaction is becoming clearer.”

DiCaprio isn’t the only one to recently condemn Trump’s decision to withdraw from the Paris treaty. While speaking to the United Nations general assembly on Wednesday, British Prime Minister Theresa May equated Trump’s position on climate change to North Korea’s nuclear tests.

“As the global system struggles to adapt, we are confronted by states deliberately flouting—for their own gain—the rules and standards that have secured our collective prosperity and security,” May said in a not-so-subtle dig at Trump.

“It is this rules-based system which we have developed—including the institutions, the international frameworks of free and fair trade; agreements such as the Paris Climate Change accord; and laws and conventions like the Non-Proliferation Treaty—which enables the global cooperation through which we can protect those values,” she added.

Despite the backlash, Trump is unlikely to be swayed. This is a man who panders to his base, and if there’s one issue Trumpists care nothing about, it’s climate change. If May and DiCaprio really want to get through to the president, they might want to show him Darren Aronofsky’s climate change allegory, mother!. If that doesn’t scare him straight, nothing will.