The constant flip-flopping over tariffs is paralysing industries. Automakers, for example, are unable to plan while there is a threat of tariffs on components made in Canada.

The European Union announced retaliatory trade action with new duties on U.S. industrial and farm products, responding to an increase in tariffs on all steel and aluminum imports.

Donald Trump said in an interview with Fox News he paused some U.S. tariffs because he 'wanted to help Mexico and Canada to a certain extent,' but added tariffs could also go up.

“You can try to intimidate us with us with trade wars, (but) we’ll never become your 51st state,” one protest organizer said, urging resistance against U.S. authoritarianism

The move is not meant to punish Americans, she says. "This is about standing shoulder-to-shoulder with my fellow Canadians."

Trump's announcement of the pause until April 2 did not mention Canada, and came shortly after he levelled new attacks against Prime Minister Justin Trudeau.

The Chinese embassy in the U.S. said the 'fentanyl issue,' which Trump said is the reason for the tariffs, was a 'flimsy excuse to raise U.S. tariffs on Chinese imports.'

European and Asian shares were mostly lower Tuesday after a new round of tariffs imposed by U.S. President Donald Trump took effect.

The tariffs announced by China's Commerce Ministry are due to take effect from March 10, though goods already in transit will be exempt until April 12.

U.S. President Donald Trump's threats of sweeping tariffs on Canadian imports are already taking a toll on Canada's oilfield drilling and services industries.

Rebellion Brewing says if tariffs come into effect, it may have to look at alternative suppliers, but it is not a prospect the company is looking forward to.

Earlier this month, India slashed tariffs on bourbon whisky to 100 per cent from 150 per cent after Trump's criticized "unfair" levies in the South Asian market.

Prime Minister Justin Trudeau's one-day visit in Brussels includes a meeting with NATO secretary-general Mark Rutte and the European Union's two most senior leaders.

Trump said Sunday he will formally announce 25 per cent tariffs on all steel and aluminum imports on Monday, including from Canada.

China countered President Donald Trump's across-the-board tariffs on Chinese products with tariffs on select U.S. imports Tuesday.