Tensions between the U.S. and Canada have escalated following the collapse of trade negotiations, leading to the imposition of 50% tariffs by the U.S. on various Canadian goods, including steel and electronics. In response, Canadian Prime Minister Mark Carney announced retaliatory tariffs set to begin on September 8, marking a significant escalation in the trade dispute. Carney criticized U.S. demands during the talks as excessive and accused the U.S. of miscalculation. Both sides are now locked in a trade war, with tariffs impacting a range of products from whisky to hockey sticks, and further negotiations appear stalled.