As Canadians absorb U.S. President Donald Trump's trade war and his threats to make Canada the 51st state, one thing has become abundantly clear: One of the world's most durable and amicable alliances — born of geography, heritage and centuries of common interests — is broken.

Canadians are feeling an undeniable sense of betrayal after Trump declared a trade war against America's northern neighbor and longtime ally. Trump keeps threatening Canada's sovereignty and and vowing to put sweeping 25% tariffs on Canadian products, though Canadian Prime Minister Justin Trudeau said Monday afternoon the tariffs will be postponed by at least 30 days after he promised more cooperation on the border.