Donald Trump's top economic adviser is accusing Prime Minister Justin Trudeau of betraying the USA administration hours after the president himself launched insults at the prime minister, calling him "very dishonest and weak" and all via Twitter.
"Please tell Prime Minister Trudeau and President Macron that they are charging the USA massive tariffs and create non-monetary barriers", Trump said Thursday on Twitter.
"As Canadians, we are polite, we're reasonable, but also we will not be pushed around", Trudeau said.
Trump, who is in Singapore for meetings with North Korean leader Kim Jong-un, tweeted that "Fair Trade is now to be called Fool Trade if it is not Reciprocal" and suggested that Canada is "bragging" in an unspecified release about benefiting from United States trade.
"He really kind of stabbed us in the back", Kudlow said.
He said Trump had done Trudeau the "courtesy" of traveling to the summit when "he had other things, bigger things on his plate", referring to Trump's June 12 summit with North Korean ruler Kim Jong-un.
In a series of tweets from Singapore, Trump kept up the tirade while contending that "Fair Trade is now to be called Fool Trade if it is not Reciprocal".
Kudlow suggested Trump saw Trudeau as trying to weaken his hand before that meeting, saying the president won't "let a Canadian prime minister push him around".
Canadian Foreign Minister Chrystia Freeland had responded to the White House comments by saying that Canada will retaliate to U.S. tariffs in a measured and reciprocal way and that Canada will always be willing to talk.
Mr Kudlow accused the Canadian PM of betraying Mr Trump with "polarising" statements on trade policy that risked making the U.S. leader look weak ahead of a historic summit with North Korean leader Kim Jong-un. "But he also pledged to retaliate against the United States tariffs on steel and aluminum products in defense of Canadian workers".
Minutes after the publication on Saturday of the joint communique that was approved by all the leaders in the G7 bloc - US, France, Germany, Japan, Britain, Italy and Canada - Trump announced on Twitter that he was retracting his support.
Despite Trump's comments, Russian Foreign Minister Sergei Lavrov said on Saturday that Moscow was perfectly happy working with the larger G20 and had "never asked anyone to return" to the Group of Seven. He said Canada has to stand up for itself. Edward Markey (D-Mass.) said on CBS' "Face The Nation" that "right now, the President is actually driving our allies away from us as we need them even more, while welcoming in the Russians".