(Reuters) -Since returning to office last month, U.S. President Donald Trump has initiated numerous tariffs and made even more frequent threats to impose levies on imported goods. They range from broad ones - a universal tariff on foreign-imported goods - to ones aimed at specific sectors,

On Friday afternoon, around the same time a delegation of senior Canadian officials was preparing to meet with President Donald’s Trump’s border czar in a bid to stave off withering new tariffs, Trump himself essentially told them from afar: Don’t bother.

The move likely will trigger retaliation and risk igniting a trade war that could cause broad economic disruption for all countries involved.

President Trump says Americans could feel 'some pain' from the emerging trade war he triggered with tariffs against Canada, Mexico and China.

INDIA/BRICS NATIONS: During his campaign Trump called India a "very big abuser" on trade and vowed to use tariffs to correct trade imbalances. He has also threatened the broader BRICS group of nations with tariffs if they did not commit to not create a new currency.

China’s promised 15 percent tariffs on U.S. products including LNG, coal and agricultural equipment are set to be imposed Monday, in response to Trump’s 10 percent levy.