( CNN) With only hours remaining before an historical summit between the leaders of the United States and North Korea, it's easy to lose sight of what President Donald Trump( and some of his top staffers) said and did just before arriving in Singapore: Blow up an international collect with some of America's closest friends with a combination of erratic behaviour and enormously impolitic statements.

Let's detail what happened in the 36 -ish hours Trump spent in Quebec — and what he and his allies said once he left.

Before Trump even jetted to the conference on Friday morning, he floated the possibility of Russia rejoining the G7.( Russia was kicked out of the group after invading Ukraine and annexing Crimea in 2014.) Trump arrived late for a gathering of G7 leaders focused on gender diversity on Saturday morning. They started the meeting without him. Trump held a, um, wide-ranging news conference before he left Quebec to jet to Singapore. In that presser, he described the meeting as a “1 0” out of 10 and insisted “hes having” very close personal relationships with , among others, Canadian Prime Minister Justin Trudeau, French President Emmanuel Macron and German Chancellor Angela Merkel. After( apparently) watching a Trudeau press conference on Us air force One, Trump took to Twitter to attack the Canadian Prime Minister. “PM Justin Trudeau of Canada acted so meek and mild during our @G7 sessions merely to devote a press conference after I left saying that, ‘US Tariffs were kind of insulting' and he ‘will not be pushed around, ‘” tweeted Trump. “Very dishonest& weak. Our Tariffs are in response to his of 270% on dairy! ” Chief Trump economic adviser Larry Kudlow went on CNN's “State of the Union”and called Trudeau's news conference a “betrayal, ” adding: “He stabbed us in the back.” Peter Navarro, a trade adviser for Trump, was even more damning in his comments about Trudeau. “There's a special place in hell for any foreign leader that engages in bad faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door, ” Navarro said here on “Fox News Sunday.” “And that's what bad faith Justin Trudeau did with that stunt press conference. That's what weak, dishonest Justin Trudeau did, and that comes right from Air Force One.”