India, Aug. 23 -- US President Donald Trump has hit back at Canada after trade negotiations between Washington and Ottawa broke down, escalating tensions between the two neighbouring countries. Trump criticised Canada in a social media post as the US moved ahead with new tariffs on Canadian goods.

The latest development comes after the United States imposed 50% tariffs on around $20 billion worth of Canadian goods, while Canadian Prime Minister Mark Carney has pledged to respond with tariffs on a "dollar for dollar" basis.

The dispute has raised fresh concerns over the future of trade relations between the US and Canada and could put further pressure on the USMCA trade agreement involving the United States, Canada and Mexico.

Donald Tr...