At these summits in the past, all the leaders commit their respective countries to a series of objectives, but U.S. President Donald Trump has shown reluctance to put pen to paper on the sections relating to trade and climate policy, which generally fly in the face of his "America First" agenda that has largely shunned multilateral cooperation.
U.S. President Donald Trump and Canada's Prime Minister Justin Trudeau pose with other leaders (not pictured) for a family photo at the G7 Summit in the Charlevoix city of La Malbaie, Quebec, Canada, June 8, 2018.
The late arrival at a session, where the G7 leaders were discussing gender equality and women's empowerment sparked concerns that the USA president might not participate at all in Saturday's meetings.
"And so began a long litany of recriminations, somewhat bitter reports that the United States was treated unfairly, that the trading system was totally unfavourable to the United States, the American economy, American workers, the middle class", the official said.
"We should at least consider no tariffs, no barriers - scrapping all of it", Trump said, according to officials who were listening and taking notes.
But tensions had already been seething over trade after the Trump administration confirmed on May 31 it would apply additional tariffs on steel and aluminum imports from Canada, Mexico, and European Union countries, ending a two-month exemption period.
Despite the apparent acrimony, Mr Macron said the G7 -which groups the United States, Canada, Great Britain, France, Italy, Germany and Japan - has succeeded in coming up with a joint declaration on trade. The U.S. and the European Union had been contemplating just such a deal, called the Transatlantic Trade and Investment Partnership, or TTIP, but it was abandoned after Trump won the 2016 election.
His early departure means he will miss a working session among the leaders on climate change and clean energy, as well as talks among the G7 and poorer countries focused on the health of oceans.
That leaves Trump diametrically opposed with Canada, which says renegotiating the deal every five years would create perpetual uncertainty and harm long-term investment.
He said: "I have been Russia's worst nightmare".
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Republican Sen. Ben Sasse of Nebraska said Trump's comments on eliminating tariffs among G7 nations would be "tremendous news" if the President is serious about the issue, adding, "I would happily carry his bag to every single meeting of those negotiations".
At what a French described as one "extraordinary" session, leaders who had vowed to confront Trump over his decision to impose tariffs on USA allies last week as part of his "America First" agenda, showered Trump with data one after the other.
The top Nafta negotiators from the United States and Canada met earlier during the summit, after Trump in the morning complained about what he called unfair trading.
Investors are also concerned about the future of the North American Free Trade Agreement, which Trump has threatened to terminate.
He's also threatened to tear up the NAFTA agreement with Canada and Mexico.
Please tell Prime Minister Trudeau and President Macron that they are charging the US massive tariffs and create non-monetary barriers.
Speaking about Russia's military incursion in Crimea, a peninsula that was part of Ukraine, Trump on Saturday blamed President Obama for the annexation.
Led by the U.S., the group kicked out Russian Federation in 2014 over its annexation of Crimea and its support for pro-Russia separatists in Ukraine. Trump has denied the hotel, which opened during the Klondike Gold Rush, was ever operated as a brothel.