Hollywood star Robert De Niro took aim at the Trump administration's stance on climate change, telling a packed audience in the Middle East that he was visiting from a "backward" country suffering from "temporary insanity."

He said that in the country he's describing, the head of the Environmental Protection Agency suggested last week that global warming may be a good thing for humanity.

"I am talking about my own country, the United States of America. We don't' like to say we are a 'backward' country so let's just say we're suffering from a case of temporary insanity," he added.

De Niro received applause and laughs when he said the U.S. "will eventually cure itself by voting our dangerous leader" out of office. He spoke Sunday at Dubai's World Government Summit.