Updated

President Trump threatened to block the sale of Canadian-made Bombardier jets in the United States, targeting one of Canada's largest aerospace companies, amid an escalating trade dispute between the US and Canada that has already affected various Canadian industries. Canada struck back with retaliatory measures, and the standoff has raised fears of a broader economic rift between the two neighboring countries. Canada's retaliatory tariffs against the United States have now formally gone into effect, marking a concrete escalation in the trade war. The tariffs are expected to raise costs on a range of American goods entering Canada, further straining bilateral trade relations as both governments show no signs of backing down.