President Joe Biden’s packed European tour seems to be catching up with him as he was caught with his eyes closed during the opening remarks of the COP26 climate conference.

The 78-year-old appeared to fall asleep while one of the speakers discussed the importance of taking action to save the planet.

But when an aide approached him to chat, the president immediately opened his eyes and liven up.

Biden rubbed his eyes and sat forward when Italy’s prime minister took the platform.

He later took the stage to deliver his own warning on the impending doom of climate change.

“Climate change is already ravaging the world,” the president said. “It’s not hypothetical.”

He also called climate change “the existential threat to human existence as we know it.”

Biden continued: “This is a decisive decade in which we have an opportunity to prove ourselves. We can keep the goal of limiting global warming to just 1.5° C if we come together.

“We’re still falling short. There’s no more time to hang back or sit on the fence or argue amongst ourselves. This is a challenge of our collective lifetimes.

“Glasgow must be the kick-off of a decade of ambition & innovation to preserve our shared future.”

Speakers were only allowed three minutes. However, the president’s remarks were longer than the allotted time and came in at more than 11 minutes.

In a separate speech at the conference, Biden took a swing at former president Donald Trump: “I shouldn’t apologize but I do apologize,” he said of Trump taking the US out of the Paris Climate Agreement.

“God bless you all and may God save the planet,” he concluded his speech.

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