Trade tensions between the U.S. and Canada escalated over the weekend as Canadian Prime Minister Mark Carney announced retaliatory tariffs on Saturday, after walking away from what he termed as a "bad deal" in a deepening rift between the longtime allies.

Negotiations between the neighboring countries broke down on Friday in Washington, putting into force new 50% U.S. tariffs impacting about $20 billion worth of goods, or 5.5% of Canadian exports to the U.S.

Impacted products range from hockey sticks to cement.

"You're at war when you get attacked. We got attacked," Carney said.

U.S. President Donald Trump hit back at Canada on Sunday, saying, "Canada wants the benefits of being a State, without being one!!!"