FILE - In this Dec. 15, 2017, file photo, President Donald Trump sits with Attorney General Jeff Sessions during the FBI National Academy graduation ceremony in Quantico, Va. Trump's White House counsel personally lobbied Attorney General Jeff Sessions to not recuse himself from the Justice Department's investigation into potential ties between Russia and the Trump campaign. (AP Photo/Evan Vucci, File)
- Conversations between Trump national security adviser Michael Flynn and Russian ambassador Sergey Kislyak.
- The completion and publication of the intelligence community assessment of Russian interference in the 2016 election.
- The briefing in which FBI director James Comey told President-elect Donald Trump about the Trump dossier.
- The president's inauguration.
- The nomination and confirmation of new Justice Department leadership.
- Flynn's interview with the FBI (conducted by Strzok).
- Comey's assurances to Trump that he, Trump, was not under investigation.
- A variety of revelations, mostly in the Washington Post and New York Times, about various Trump figures under investigation.
- Attorney General Jeff Sessions' recusal from the Russia probe.
- The firing of top Obama Justice Department holdover Sally Yates.
- Trump's tweet alleging he was wiretapped.
- Trump's firing of Comey.
- And, finally, on May 17, 2017 — the final day of the missing texts — the appointment of Trump-Russia special prosecutor Robert Mueller.