Carney faces ticking clock on Canadian support for tough tactics with Trump

The prime minister is one of the few global leaders to retaliate against U.S. tariffs, despite Canada's dependence on U.S. buyers for about 70% of its exports.

OTTAWA, Aug 26 - Prime Minister Mark Carney has the support of most Canadians after breaking off trade talks with the U.S., but widespread approval of his pushback against U.S. President Donald Trump could disappear within months as the consequences of the trade war sink in.