"...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."
"The smear campaign against the American diplomat lies at the heart of the impeachment proceedings against President Trump. Those proceedings come to a head Wednesday with an expected House vote on two articles of impeachment."
"Graphika, which outlined its analysis in a report on Tuesday, said it could not say with precision who in Russia might be responsible for circulating the posts claiming to show the do-not-prosecute list. The State Department has denied that such a list existed, and Lutsenko has since sought to clarify what he reportedly told Solomon."