The past 48 hours of tariff policies have stunned markets and boardrooms across the world.

President Donald Trump’s will-he-or-won’t-he tariff drama is fraying nerves across the energy industry — even after Mexico and Canada persuaded him to hit the pause button today. His threats to impose steep levies on those countries plus China — the three major suppliers to the U.

U.S. President Donald Trump slapped Canada and Mexico with duties of 25% and China with a 10% levy on Saturday, calling the measures necessary to combat illegal immigration and the drug trade. Canada and Mexico immediately vowed retaliatory measures,

China's tariffs - due to begin next Monday - would also apply to US oil and farm machinery, but more talks are due this week.

China is the world's top energy importer but its purchases from the United States are relatively modest, blunting the impact of Beijing's move on Tuesday to slap retaliatory tariffs on imports of U.S.

China hit the U.S. back with retaliatory tariffs across the board over President Trump’s enforcement of tariffs on Chinese goods that went into effect on Tuesday.