WaPo:

The story that appeared on The Hill website on March 20 was startling.

Marie Yovanovitch, the American ambassador to Ukraine, had given a “list of people whom we should not prosecute” to Ukraine’s prosecutor general, Yuriy Lutsenko, according to a write-up of an interview Lutsenko gave to the conservative columnist John Solomon.

Five days later, an image of that purported list appeared in a post on the website Medium and on a number of other self-publishing platforms in locations as disparate as Germany, South Africa and San Francisco. In less than a week, the Medium essay had been translated into Spanish and German and posted to other websites.

Now, a social media analysis firm, Graphika, has traced those posts to a Russian disinformation campaign — in the first evidence that a network of accounts involved in spreading disinformation before the 2016 election also participated in circulating the false claims about Yovanovitch that led earlier this year to her recall from the U.S. embassy in Kyiv.