U.S. President Donald Trump on Saturday threw the G7’s efforts to show a united front into disarray after he became angry with Canadian Prime Minister Justin Trudeau, and said he might double down on import tariffs by hitting the sensitive auto industry.

Trump’s bombshell announcement that he was backing out of the Group of Seven communique, made after he left the summit in Canada early, torpedoed what appeared to be a fragile consensus on the trade dispute between Washington and its top allies.

“PM Justin Trudeau of Canada acted so meek and mild during our @G7 meetings only to give a news conference after I left saying that, ‘U.S. Tariffs were kind of insulting’ and he ‘will not be pushed around.’ Very dishonest & weak. Our Tariffs are in response to his of 270% on dairy!” the U.S. president tweeted.

In his press conference, Trudeau had spoken of retaliatory measures that Canada would take next month in response to Trump’s decision to slap tariffs on steel and aluminum imports from Canada, Mexico and the European Union.

“Canadians, we’re polite, we’re reasonable but we also will not be pushed around,” Trudeau, the host of the two-day summit in La Malbaie, Quebec, told reporters.

Reacting to Trump’s tweets, Trudeau’s office said: “We are focused on everything we accomplished here at the summit. The Prime Minister said nothing he hasn’t said before — both in public, and in private conversations with the President.”

Trump’s salvo capped a dizzying two days of controversies that began with his suggestion Russia be readmitted to the G7, then what a French official described as a “rant” full of “recriminations” against U.S. trading partners, followed by Trump’s denial of any contention with leaders at the summit and his description of their relationship as a “10.”

By ordering his representatives to back out of the communique, Trump appeared to be asserting his oft-stated aim of upsetting the status quo whether by pulling out of the global climate accord or the international nuclear deal with Iran or threats to scrap the North American Free Trade Agreement.

The communique, which appeared to have papered over the cracks that have surfaced in the G7, said the leaders of the United States, Canada, Britain, France, Italy, Germany and Japan agreed on the need for “free, fair, and mutually beneficial trade” and the importance of fighting protectionism.

“We strive to reduce tariff barriers, non-tariff barriers and subsidies,” the statement said.

Trump’s reversal sent his G7 partners scrambling.

“We stick to the communique as agreed by all participants,” a European official said on condition of anonymity.

Trump’s counterparts in the G7 had sought to try to find some semblance of consensus with Washington on trade and the other key issues that have formed the basis of the 42-year-old grouping of industrialized nations.

(SD-Agencies)