US President Donald J. Trump has struck a defiant tone.saying trade wars are good and easy to win

US President Donald J. Trump has struck a defiant tone, saying trade wars are good and easy to win, after his plan to put tariffs on imports of steel and aluminium triggered global criticism and a slide in world stock markets.

“We regard the implication of any new tariffs as absolutely unacceptable." - Justin Trudeau, Prime Minister of Canada.