Special Counsel Robert Mueller's investigation into Russian meddling in the 2016 presidential election is vast, and many people are speculating on where it might go. However, it helps to have familiarity with how federal prosecutors build these kinds of cases, which is an advantage that Renato Mariotti has. Mariotti is a former federal prosecutor who has handled many obstruction cases. At Politico, Mariotti breaks down what we know about the progress of the probe and what can be reasonably extracted from the evidence, from focusing on Paul Manafort and Michael Flynn, to firing former FBI Director James Comey and much more. Read more about Mariotti's analysis at Politico.