US President Donald Trump announced immediate abruptly 50% tariffs on particular Canadian goods.

The designated categories include steel, aluminum and lumber.

The the Treasury office said the move aims to defend domestic producers and lower Canada’s trade surplus.

The Canada’s government responded with plans to strike back.

The Canadian dollar tumbled 1.5% against the US dollar after the notice.

Market analysts alerted that the tariffs could expanding trade conflict.

Washington and Ottawa hinted a willingness to negotiate a agreement.