‘This is big’: Legal experts react to prosecutor’s abrupt resignation from John Durham's Russia probe
President Donald J. Trump listens as Attorney General William Barr delivers remarks at a Medal of Valor and Heroic Commendations Ceremony Monday, Sep. 9, 2019, in the East Room of the White House. (Official White House Photo by Shealah Craighead)

Nora Dannehy, a federal prosecutor who is a top aide to U.S. Attorney John H. Durham in his Russia investigation, has quietly resigned from the probe, the Hartford Courant reports. Dannehy's resignation was at least partly out of concern that the investigative team is "being pressed for political reasons to produce a report before its work is done," her colleagues tell the Courant.

"Durham recruited Dannehy to join his team after he was appointed by Attorney General William Barr more than a year and a half ago to examine the the FBI’s legal justification for a disputed counterintelligence investigation that looked for ties between President Donald J. Trump’s 2016 campaign and Russian efforts to meddle in the election," the Courant explained.

The move has legal experts on Twitter acknowledging the story as a major development in the case: