It took just two tweets by U.S. President Donald Trump to shatter what seemed like a fragile consensus reached by G7 leaders after tense talks at their Quebec summit this weekend and raise the spectre of an all-out trade war with Canada.
The tweets, sent as Trump was en route to Singapore for his summit with North Korea, were personal and aimed squarely at Prime Minister Justin Trudeau.
Just moments after the official joint communiqué was released outlining 28 areas of agreement by all seven nations — with a few exceptions — Trump tweeted he was instructing his officials to withdraw support for the communiqué.
And he had suggested more dire consequences were to come.
"I have instructed our U.S. Reps not to endorse the Communique as we look at Tariffs on automobiles flooding the U.S. Market!" Trump tweeted.