New Delhi, March 29 -- Canadian Prime Minister Mark Carney and US President Donald Trump held their first official call since Carney took office on March 9, discussing trade and security amid escalating tensions over impending US tariffs on Canadian goods.

Carney described the conversation as "cordial" and "substantive" but made it clear that Canada would not back down in the face of new trade barriers imposed by Washington.

With the US set to impose new tariffs on Canadian autos, steel, and aluminum starting April 2, Carney announced that his government is ready to respond decisively.

"I informed President Trump that my government will be implementing counter tariffs to protect Canadian workers and our economy following the announceme...