Washington, Sept. 7 -- US President Donald Trump lashed out at the European Union (EU) for slapping Google with a nearly $3.5 billion "unfair" antitrust fine, threatening retaliatory tariffs if the bloc does not repeal the measure. Trump made his warning in a social media post after the EU announced it was fining Google $3.47 billion as it ordered the search giant to stop favouring its own advertising technology services. "Europe today "hit" another great American company, Google, with a $3.5 billion fine, effectively taking money that would otherwise go to American investments and jobs," he said. He added: "We cannot let this happen to brilliant and unprecedented American Ingenuity and, if it does, I will be forced to start a Section 301 p...