https://www.reuters.com/article/us-usa-trump-russia-alphabet/google-uncovered-russia-backed-ads-on-youtube-gmail-source-idUSKBN1CE192 >Google has discovered Russian operatives spent tens of thousands of dollars on ads on its YouTube, Gmail and Google Search products in an effort to meddle in the 2016 U.S. presidential election, a person briefed on the company's probe told Reuters on Monday.