It was eight against one, according to German Chancellor Angela Merkel.
On one side, leaders of Canada, Japan, France, Germany, Italy and the United Kingdom, plus two EU representatives. On the other side, President Trump.
And up for debate, the peril of climate change and the urgency of the U.S. commitment to the Paris accord to reduce greenhouse gas emissions.
Merkel said that everyone at the table at the G-7 summit in Taormina, Italy, was urging Trump to stick with the pact, according to Reuters.
After that conversation, Trump economic adviser Gary Cohn said the president's views are "evolving" and that he feels "much, much more knowledgeable" after the conversation with world leaders.
"He came here to learn. He came here to get smarter," Cohn said. "His views are evolving, which is exactly as they should be." Any decision on climate change would ultimately be based on what's best for the United States, Cohn said.
The Paris accord, created in 2015 after lengthy negotiations, calls on 196 parties to ratchet back greenhouse gas emissions. The goal is to keep the rise in global temperatures no higher than 2 degrees Celsius, as compared with pre-industrial levels. (As NPR reported at the time, the global average temperature has already increased about 1 degree Celsius.)
The deal includes voluntary pledges to reduce emissions. It also calls for developed countries to provide billions of dollars to help the developing world switch from fossil fuels to renewable energy sources. The accord was historic in its scope and its ambition, even though its reliance on voluntary pledges made it less robust than some advocates had hoped.
On the campaign trail, Trump said he would "cancel" the Paris deal. He has previously suggested that climate change is a hoax and appointed as the head of the EPA a man who said he does not believe human activity is a primary contributor to global warming. (Climate change and its impacts have been observed by scientists working in multiple fields, and the overwhelming scientific consensus is that human activity is the primary cause.)
But since taking office, Trump has not moved to withdraw the U.S. from the Paris agreement. He has rolled back a number of Obama-era climate change measures, which will hamper U.S. efforts to fulfill its Paris pledges. But he hasn't retracted the pledges themselves. Just this week, members of his administration indicated that the White House had not yet decided what to do on the issue.
Before the conversation between Trump and the other G-7 leaders, Italian Prime Minister Paolo Gentiloni noted that all the other countries had confirmed "total agreement" to the pact, while the U.S. commitment was an "open question."
"We are sure that after an internal reflection, the United States will also want to commit to it," Gentiloni said, according to the Associated Press.
But Gentolini and other world leaders weren't just waiting for internal reflection. They added some external pressure, too.
French President Emmanuel Macron reportedly discussed climate change with Trump at length on Thursday at a meeting in Brussels. Leaders of the Roman Catholic Church broached the topic when Trump visited the Vatican.
And then there was the chat between the G-7 leaders.
Merkel called the conversation "controversial." Cohn said it was "robust." Still to be determined: whether it was persuasive, or consequential.
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