Donald Trump singled out the United States before the entire international community at the G20 summit over the weekend. He was the only leader in attendance to refuse to sign a joint statement pledging a non-binding commitment to continue combating climate change.

After a strenuous, all-night negotiation in Buenos Aires, the world leaders issued a communiqué re-affirming that the Paris climate agreement "is irreversible" and vowing "full implementation" of its policies to "continue to tackle climate change, while promoting sustainable development and economic growth."

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However, the summit was fraught with tensions over various countries' objections and demands, including Trump's refusal to budge on climate change or trade agreements. As such, world leaders struggled to pen a separate clause to account for Trump's "America First" stance. The communiqué reads: "The United States reiterates its decision to withdraw from the Paris Agreement, and affirms its strong commitment to economic growth and energy access and security, utilizing all energy sources and technologies, while protecting the environment."

In another compromise forced by Trump's intransigence, this year's G20 statement also shirked its usual promises to fight protectionism and uphold multilateral trading rules. The summit weakly acknowledged the "contribution" of the "multilateral trading system," despite the fact that it's "falling short" of its goals in trade growth and job creation. One European official present at the weekend's negotiations told NBC News, "There were moments when we thought all was lost."

At last year's summit, Trump shocked world leaders with his first refusal to join the consensus on climate and trade issues. He continued to alienate the U.S. from the international community over the summer. In June, the president refused to sign a joint statement on global economic policies from the G7 summit, even taking to Twitter to deride Canadian Prime Minister Justin Trudeau over the policies.

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As a final act of belligerence, Trump stormed off the stage as the rest of the world leaders gathered for a photo to commemorate the end of a two-day effort in global solidarity. After shaking hands with Argentine President Mauricio Macri, Trump left Macri visibly confused on stage as he hastily left. Trump was audibly recorded telling an aide, "Get me out of here."

Reluctantly, he returned to the stage moments later to pose for group photos.

Hilarious moment Trump caught saying "get me out of here" at G20 Summitwww.youtube.com

Meg Hanson is a Brooklyn-based writer, teacher, and jaywalker. Find Meg at her website and on Twitter @megsoyung.