Robert S. Mueller III, the special counsel, has marshaled prosecutors, F.B.I. agents and other lawyers to investigate Russia’s 2016 election interference and whether any Trump associates conspired. The team has secured indictments against dozens of people and three companies, one trial conviction and a handful of guilty pleas in the highest-profile political inquiry in a generation. This week alone, Mr. Mueller and his prosecutors accused Paul Manafort, President Trump’s former campaign chairman, of breaching his plea deal, and secured a guilty plea from Michael D. Cohen, Mr. Trump’s former personal lawyer.
Each of the core prosecutors has a specialty, like political corruption, hacking or money laundering, many of which have featured in indictments. They come from familiar places: the Justice Department’s criminal division, federal prosecutors’ offices in New York and around Washington and a law firm where Mr. Mueller worked.
The makeup of the team has shifted as prosecutors and others have departed and some aspects of the investigation are wrapping up. Here is a guide to the key prosecutors and what we know so far about the cases they worked on.