U.S. President Donald Trump throws the G7's efforts to show a united front into disarray after he became angry with Canadian Prime Minister Justin Trudeau, and instructed his representatives NOT to endorse the summit's joint communique.
Earlier in the day, Trudeau said that the communique was agreed by all countries.
However, the US president said that after his departure to Singapore the prime minister said that "US Tariffs were kind of insulting" and he "will not be pushed around".
President Trump recaps his participation at a "tremendously successful" G7 summit, says trade, tariffs and immigration topped the agenda.
In a statement issued following Mr Trump's tweets, Mr Trudeau said he remained focus on what was accomplished at the G7 summit.
The attack shattered any hope that Canada could avoid US tariffs on steel and aluminum or renegotiate the North American Free Trade Agreement by virtue of the charm, patience or measured response it has extended to Trump since he took office.
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"If there were to be a different United States government with a different agenda the [relationships] would come back really quickly" because of the U.S. economy's massive size and the dollar's preeminent role in global finance".
"If they retaliate, they're making a mistake", Trump said.
"And so we are talking to many countries", he said.
The comments, made after Trump had left to go to Singapore for his much-anticipated meeting with North Korean leader Kim Jong Un, infuriated the USA president.
Trudeau also said Canada would move forward with retaliatory measures on July 1 in response to tariffs on steel and aluminium imports into the USA from Canada, Mexico and European Union (EU) countries announced by Trump on May 31.
According to reports from inside the summit in Canada, Mr Trump caused deep divisions between the seven major nations - the US, Germany, France, Japan, Canada, Britain and Italy - by delivering a "rant" on global trade.
Trump called the summit a "one time shot" for Kim, but expressed optimism at the beginning of talks with the North Korean regime.
Trump throws G-7 into disarray with tweets after he leaves
In the weeks leading up to the summit, he imposed tariffs on steel and aluminum from Canada, Mexico, and the European Union . French President Emmanuel Macron stared at Trump after he sat down.
Officials from European delegations quickly leaked copies of the joint statement to AFP, and it was published online moments before Trump tweeted.
"We had some strong, firm conversations on trade and specifically on American tariffs". "I think within the first minute I'll know", Trump said. "You got to go tariff free", he argued.
"If a deal isn't made, that would be a very bad thing for Canada and it would be a very bad thing for Mexico", Trump said. With Trump and Trudeau exchanging increasingly personal and public insults, what happens to those NAFTA negotiations?
"On NAFTA we either leave it the way it is as a three-some deal with Canada, the United States and Mexico and change it very substantially - we're talking about very big changes. Very dishonest & weak", the president tweeted.
Trudeau criticized Trump's recent decision to place tariffs on steel and aluminum from the European Union, Canada and Mexico, saying it was "insulting" that Trump cited US national security as his reason for doing so.
In retrospect, the consensus had appeared shaky from the outset, and even as Trump flew out it was clear that the summit had failed to heal the rift on trade. Macron said Thursday on Twitter, "The American President may not mind being isolated, but neither do we mind signing a 6 country agreement if need be".
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