Sources familiar with James Comey’s thinking say that his testimony was planned in advance as part of the counterintelligence operation against Russia’s attack on the United States. James Comey knew in advance he was going to be fired, these sources say, when Trump threatened him. At that point, the Director set in place countermeasures to protect the FBI”s investigation from Trump’s interference. These included discussions with future key players at the Department of Justice and the FBI, these sources say, including Acting Director McCabe and Deputy Attorney General Rosenstein. It was further anticipated by Director Comey, these sources say, that...