President Donald Trump late Thursday threatened a 35% tariff on goods imported from Canada, a dramatic escalation in an on-again, off-again trade war with America’s northern neighbor and one of its most important trading partners.

Global investors got a harsh reminder of the risks around trade tariffs and U.S. President Donald Trump's deal-making on Saturday after he threatened fresh tariffs on his biggest trading partners in Europe and Mexico.

Vietnam’s leadership was caught off guard by US President Donald Trump’s announcement last week that it agreed to a 20% tariff, and the Southeast Asian nation is still seeking to lower the rate, according to people familiar with the matter.

Vietnam rushed to meet the July 9 trade deadline set by U.S. President Donald Trump, hoping to escape a round of harsh reciprocal tariffs. But that early move has now left officials in Hanoi and major manufacturers facing more confusion than clarity.

Vietnam thought it had a preliminary deal with the U.S. to lower its tariff level substantially. Then, at the last minute, President Donald Trump raised the rate.