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Special Counsel Robert Mueller wrote a letter complaining to US Attorney-General William Barr that the summary of the Mueller report that he prepared for Congress “did not fully capture the context, nature, and substance” of Mueller’s work.

The letter, which was obtained by The Washington Postwas sent on March 27, after Barr had announced that Mueller had not found a conspiracy between the Trump campaign and Russian officials seeking to interfere in the 2016 presidential election. Barr also said Mueller had not reached a conclusion about whether Trump had tried to obstruct justice, but Barr reviewed the evidence and found it insufficient to support such a charge.

“There is now public confusion about critical aspects of the results of our investigation. This threatens to undermine a central purpose for which the Department appointed the Special Counsel: to assure full public confidence in the outcome of the investigations,” Mueller wrote in his letter.