A Moscow-based think tank linked to Russian President Vladimir Putin created a plan to swing the 2016 presidential election in favor of Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE, Reuters reported on Wednesday.

Three current and four former U.S. officials told Reuters that two confidential documents obtained from the Russian Institute for Strategic Studies justify the conclusion reached by the U.S. intelligence community about Russia's interference in the U.S. election.

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According to the report, the institute is run by former senior Russian intelligence officials appointed by the Russian president's office.

The seven U.S. officials told Reuters that one of the documents was a strategy paper drafted in June 2016 that advocated a propaganda campaign on various media platforms urging U.S. voters to back a presidential candidate with a friendlier stance toward Russia.

The second document, written in October, advocated for Russia to switch focus to amplifying voter fraud claims, given the widely held view at the time that Democrat Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE was likely to beat Trump.

The shift in strategy would be used to undermine Clinton's presidency and damage her reputation, the document implied.

According to four of the sources, the June strategy paper expanded on Putin's earlier strategy from March 2016, in which Moscow allegedly instructed state-backed media outlets such as Sputnik News and RT to produce more pro-Trump content.

A spokesperson for Sputnik dismissed the claims of U.S. sources, calling them an "absolute pack of lies" in a statement to Reuters.