If Durham chooses to bring charges against any official who launched the Trump probe, history suggests he is extremely likely to persuade a jury to convict the accused and sustain those convictions upon appeal. And if he does not bring charges, it is extremely unlikely that any other prosecutor could have succeeded; regardless of what the official did, the evidence would not be there to convict or sustain a conviction. John Durham’s career is full of big, high-stakes, politically charged cases, but this one is the biggest, highest-stakes, and most politically charged of all. Luckily, it seems like his whole life has prepared him for this moment.