And Trudeau has certainly been among the leaders in that regard in recent days.
White House trade adviser Peter Navarro told Fox News on Sunday that Trudeau "deserves a special place in hell" for trying to "stab (Trump) in the back on the way out the door", after Trump left the G7 in La Malbaie, Que., and pulled his nation's support for the joint communique.
"International cooperation can not be dictated by fits of anger and throwaway remarks", Macron's statement said. We are sticking to them and whoever reneges on them is showing incoherence and inconsistency.
"Let's be serious and worthy of our people".
German foreign minister Heiko Maas posted on Twitter: "You can destroy an incredible amount of trust very quickly in a tweet".
Kudlow, 70, at one point referred to Canada's leader as "Pierre Trudeau", confusing the 46-year-old prime minister with his late father, who served in the same capacity for more than 15 years between 1968 and 1984 and died in 2000.
Still, numerous Canadian officials, including Trudeau's spokesperson, noted that he said nothing new or anything that hadn't been discussed with Trump in private.
Instead, Canada will likely issue a chair's summary of the meeting listing the major topics of discussion. In tweets, Trump insulted Trudeau as "dishonest" and "weak".More news: Blackberry Key2 is out: 52 Keys more than promised
Greg Valliere, the chief global strategist at Horizon Investments, wrote Monday that the back-and-forth would most likely only cement the resolve of both Trump and Trudeau.
On trade, she said multilateral action was the way forward, not unilateral action against one's partners.
US President Donald Trump continued to excoriate his Group of 7 summit allies in a series of tweets from Singapore, where he is due to meet North Korean leader Kim Jong Un in a historic summit Tuesday.
Describing the USA tariffs on European steel and aluminium as "unjustified", she left no doubt that EU nations would impose counter-measures on United States goods in response but cautioned against tit-for-tat retaliation which might lead to a trade war.
'Based on Justin's false statements at his news conference, and the fact that Canada is charging massive Tariffs to our US farmers, workers and companies, I have instructed our US Reps not to endorse the Communique as we look at Tariffs on automobiles flooding the US market!' he tweeted.
- Trudeau added that Trump "will continue to say what he says", but G7 countries made significant progress on matters of economy, female empowerment, environment and jobs. The others mocked the United States president, who withdrew U.S. endorsement to a G7 economic agreement on Sunday. But, Trump's defenders today say that he is simply standing up for America.
And he brought in Merkel's government: " ...More news: Robert DeNiro Says 'F**k Trump' Twice At Tony Awards
Only United States can get all the perks and profits? 'It was a hard time, rough, very frank'.
Burns, now a professor at Harvard University's Kennedy School, termed Navarro's comments "over the top embarrassing".
Mrs May told the Commons that she made clear to Mr Trump that the levies were unacceptable - but she underlined the need for dialogue to stop the dispute from escalating.
Ottawa has planned dollar-for-dollar retaliation on the US imposition of steel and aluminum tariffs on Canada.
"He held a press conference and he said the U.S.is insulting".
"This isn't just G7". Perhaps the harm done by higher tariffs on imported steel and aluminum are not worth the potential benefits from lower tariffs.
"Ultimately that's what you want", Trump said. 'And it's going to stop.
"We commit to modernize the WTO to make it more fair as soon as possible".More news: The End of Net Neutrality is Here
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