Canada once downplayed the monarchy. Now, it is leaning on it to assert its sovereignty.

King Charles will walk a diplomatic tightrope as he opens Canada's Parliament for the first time, 48 years after his mother.

U.S. President Donald Trump’s repeated suggestion that the U.S. annex its northern neighbor prompted new Canadian Prime Minister Mark Carney to invite Charles to give the speech from the throne on Tuesday where he will lay out the Canadian government’s agenda when Parliament reopens.