- Julian Zelizer: Trump's firing of Comey in middle of Russia probe is stunner that recalls Nixon's "Saturday Night Massacre"
- Zelizer: It appears to be Trump's nuclear option for dealing with probe into the very foundations of his power
Julian Zelizer, a history and public affairs professor at Princeton University and a New America fellow, is the author of "The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society." He's co-host of the "Politics & Polls" podcast. The opinions expressed in this commentary are his own.
(CNN)President Trump dropped a bombshell Tuesday with the announcement that he had fired FBI Director James Comey -- just days after Comey testified before the Senate Judiciary Committee about, among other things, the bureau's investigation into Russian meddling in the election that propelled Trump to the presidency.