By Philip Blenkinsop, David Lawder and Stephanie van den Berg BRUSSELS/BANFF, Canada/THE HAGUE (Reuters) -U.S. President Donald Trump threatened on Friday to ratchet up his trade war again, pushing for a 50% tariff on European Union goods starting June 1 and warning Apple he may slap a 25% levy on all imported iPhones bought by U.

President Donald Trump reignited trade tensions with his social media posts before the Memorial Day holiday aimed at the European Union and Apple.

Stock markets declined after the president’s early morning threats of import taxes of 25 percent on iPhones and 50 percent on goods from Europe.