India, Sept. 25 -- Canadian Prime Minister Mark Carney has disclosed that his administration formally evaluated the possibility of US-led military action against Canada, characterising the contingency planning as an essential precaution against an "extreme tail risk".

Speaking in a comprehensive interview published by The New York Times, the Canadian leader addressed the unprecedented friction defining contemporary cross-border relations.

While emphasising that an armed conflict with Washington remains highly improbable, his public acknowledgement of such strategic preparations highlights a deepening erosion of trust between the two historic allies.

The extraordinary remarks arrive against a backdrop of mounting economic and diplomatic...