() Trump called climate change the “greatest con job ever perpetrated on the world” at the U.N. General Assembly and admonished member countries for their environmentally-conscious policies.

“If you don’t get away from this green scam, your country is going to fail,” Trump told the assembly Tuesday. “And I’m really good at predicting things.”

Trump, a fracking fan known for disparaging comments about wind turbines, said the U.S. is getting rid of “falsely-named renewables,” and urged allies to follow in his footsteps.

“Europe … has a long way to go, with many countries being on the brink of destruction because of their green energy agenda,” Trump said.

The U.N. holds an annual climate summit and releases frequent climate reports. Its most recent publication made public in July 2025 warned of extreme heat, melting glaciers and flooding that require “early intervention” to fix.

The organization has a long history of climate change policy, with the first international treaty centering on the topic penned in 1992.

The U.N.’s most recent piece of regulation was the 2015 Paris Agreement, which Trump withdrew the U.S. from via executive order within hours of retaking the Oval Office in January. The Inauguration Day action marked the second time he’d made that decision.

“All of these predictions made by the United Nations and many others, often for bad reasons, were wrong,” Trump said. “They were made by stupid people.”

He pointed to predictions that he said have not come true, including estimates that some countries may be “wiped off the map” by 2025, something he said is “not happening.”

Trump earlier this month attempted to revoke a landmark 2009 determination that climate change poses a danger to the public. The National Academy of Sciences said the evidence for rising seas, greenhouse gases and other phenomena’s negative effects remains “beyond scientific dispute.”