Asked by reporters whether the problem with Trump was that he "didn't care about being isolated", Macron said: "You say the U.S. President doesn't care at all".
The agenda after Trump's departure on Saturday includes sessions on climate change and clean energy and oceans; meetings with leaders from countries outside the G-7, and the closing press conference by the summit's host, Canadian Prime Minister Justin Trudeau.
Mr Trump has accused Canada of ripping off the USA through unfair trade practices, and Canadian officials have said Mr Trump is using inaccurate information to attack a U.S. ally. "Look forward to seeing them tomorrow".
Abe, who was in Washington ahead of the U.S. president's historic summit with North Korean leader Kim Jong Un next week, has more at stake than tariffs.
Mexico hits United States pork, cheese, grapes in reply to Trump tariffs
The tariff increases are created to hit areas that are politically favorable to Trump, such as pork production, Mexican experts said.
Donald Trump is due to fly into Quebec on Friday morning for a G7 meeting which, even before it has begun, is already on the way to being the most acrimonious in the summit's history.
Prime Minister Theresa May is among the G7 leaders who have criticised the USA president for not exempting the European Union and Canada from his new tariffs on steel and aluminium imports.
Mr Trudeau has described the United States claim that the tariff decision was taken on national security grounds as "insulting".
"There are disagreements. He's sticking to his guns, and he's going to talk to them", said Larry Kudlow, Trump's top economic adviser, at a briefing on Wednesday.
While there have been disputes over policy, analysts say the current dust-ups between the Trump administration and longtime USA allies point to a potential shift in global dynamics.
Kasich calls on Trump to condemn Roseanne's tweets
Barr posted the tweets after a holiday weekend of partying and Ambien, according to the comedian and was apologetic at first. Arnold added that this was not the Barr he married in 1990, noting she was a "feminist" when they met.
The Canadian leader is embroiled in rows with Washington over steel and aluminum and negotiations over the North American Free Trade Agreement.
But Macron stressed that the United States was no longer the world's sole economic superpower and urged other industrialized countries to stick together.
The European Union plans to follow through on its threat to slap new tariffs on USA goods.
Tensions between the US and its allies have increased in recent weeks after a series of White House decisions have frustrated some of the United States' closest worldwide partners. But even though he has made his criticism of globalization a major part of his appeal to voters, Trump was the main target of a protest by around 400 demonstrators on Thursday night who set fire to U.S. and other G7 flags.
Maas also highlighted the need for European nations to seek other allies as their relationship with Washington deteriorates, particularly with natios that "wish to hold to the multilateral world order".
The Other China Challenge
He also asserted the islands belong to China and that Beijing is simply acting to defend the country's sovereignty. Ruan of CIIS said that the development of China-Japan ties will contribute to a more integrated Asia at large.
The early exit will give Trump about 24 hours to meet with allies and try to defuse the escalating trade dispute.