Usually a rather technical meeting, this time, many were expecting the talks to also provide some indication of where the United States global climate change policies are heading under the Trump administration, and how other countries might be reacting in response.
"I was sitting in on some of the discussions [at the North Atlantic Treaty Organisation summit] in Brussels, by the way, where climate change came up, and the president was open".
But in Taormina, for the final throes of the G7, Mr Trump isolated himself, and the USA, from the world's other wealthiest countries, refusing continued commitment to the Paris climate change deal.
In talks with European Union leaders, Trump appeared to display a limited grasp of how the world's biggest market operates a common trade policy, railing against Germany's "bad, very bad" surplus with his country. And former CIA Director John Brennan told a congressional committee of contacts a year ago between the Russian government and Trump's campaign team.
Angela Merkel has suggested Germany and Europe can no longer rely on the U.S. under Donald Trump.
A report from the Axios news outlet, however, cited "three sources with direct knowledge" as saying Trump had told confidants including the head of the Environmental Protection Agency, Scott Pruitt, that he plans to pull the United States out of the deal.
"The Trump administration's stance against action is sand in the gears of climate change action".
German Chancellor Angela Merkel was more downbeat, calling the G-7 climate talks "very hard, if not to say very unsatisfactory".
Peace in the Middle East: Instead of criticizing the Saudi regime or encouraging a more democratic way of governing, Trump was decidedly diplomatic: "We are not here to lecture - we are not here to tell other people how to live, what to do, who to be, or how to worship". "Muslim nations must be willing to take on the burden if we are going to defeat terrorism and send its wicked ideology into oblivion", he said in a speech. And pulling out threatens to unravel the ambition of the entire deal, given how integral former President Obama was in making it come together in the first place.
Hopefully Trump will follow his fellow leaders on this issue. And, it could make Putin happy, as we'll see. The no-protectionism pledge had been a part of previous G-7 statements but was omitted after a meeting of the group's finance ministers earlier this month in Bari, Italy.
Trump's position appeared to be addressed by new language that said the member countries would be "standing firm against all unfair trade practices".
But there was no chance for journalists to question Trump, who broke with G7 protocol by not holding a news conference. "However, we also stand ready to take further restrictive measures in order to increase costs on Russian Federation should its actions so require", the final statement says.