U.S. and European stock futures dipped in Asia on Friday after President Donald Trump stepped up tariff threats against Europe and Canada, restraining an early rally in regional share markets.The dollar gained on the euro and the Canadian currency as Trump issued a letter late on Thursday that a 35% tariff rate on all imports from Canada would apply from August 1,

Major stock indexes were slightly lower on Friday as U.S. President Donald Trump's announcement of tariffs on imports from Canada fanned worries about trade tensions, with the Canadian dollar down against the greenback.