The president is increasingly threatening other countries with tariffs for issues that have little to do with trade.

Trump clashes with Denmark’s PM over Greenland and threatens tariffs in Arctic land row - The new US president has wasted no time in his bid to acquire the territory

In just a week, the president has floated financial reprisals for Mexico, Canada, Russia, Denmark and Colombia. The hostilities could backfire.

The European Commission said they have the tools to deal with "unfair economic coercion against a single member state".

However, Trump's threats have changed over time, ranging from small levies to ones exceeding 200%, leaving other nations and businesses unclear of what is to come next. Here is a roundup of Trump's trade-related threats.

President Donald Trump said he wants to impose across-the-board tariffs that are “much bigger” than 2.5%, the latest in a string of signals that he’s preparing widespread levies to reshape US supply chains.

The man U.S. President Donald Trump has chosen to oversee his tariff agenda says hitting Canada with 25 per cent across-the-board duties would be an emergency measure to achieve border security — and could be followed by more tariffs in the future.