Mike Pence was a career Army intelligence officer who served in Afghanistan and Iraq and was still in uniform as a three-star general when he became Barack Obama's head of Defense Intelligence in July 2012.
But he fell out badly with the Obama administration, was forced out in July 2014 and moved into private intelligence consulting.
December 10: Flynn is paid to travel to Moscow and sits beside Vladimir Putin at dinner celebrating propaganda outlet RT (right). His consulting business has Russian clientsInsurance Loans Mortgage Attorney Credit Lawyer
February: Flynn signs up to provide national security advice to the Trump campaign; in the next few months he is floated as a possible running mate
July 20 : Flynn leads 'lock her up' chants at the Republican National Convention and claims Obama concealed the actions of Osama bin Laden
July 31: FBI open counter-intelligence investigation Crossfire Hurricane into group of Trump aides, including Flynn, for possible Russian influence. In 2014 an FBI informer had told agents he saw Flynn spending time at a dinner in the UK with a Russian woman with ties to Kremlin intelligence; the information is included in their investigation. Flynn is code-named Crossfire Razor
November 30: Obama's ambassador to the United Nations, Samantha Power, makes the first of what will be 48 requests by Obama and Obama-eras officials to 'unmask' a redaction from intelligence reports which covers up Flynn's name
Flynn meets Russian ambassador Sergei Kislyak (right) at Trump Tower and exchanges calls and messages throughout the month.
December 29: Hours after Obama announces sanctions on Russia for election interference, they speak and Flynn says it will be 'reviewed' when Trump takes power. The call is heard by intelligence agents who monitor Kisylak's calls and details are included in intelligence reports. The next day Putin says Russia won't retaliate for the sanctionsInsurance Loans Mortgage Attorney Credit Lawyer
January 4: FBI drafts report saying there is 'no derogatory information on RAZOR [Flynn].' But 20 minutes later FBI counterintelligence agent Peter Strzok tells case agent 'don't close RAZOR,' and '7th floor involved' meaning FBI leadership. He also emails lover Lisa Page, a senior FBI lawyer, about the Logan Act - a never-enforced 1799 law banning private people from interfering in foreign relations. 'Razor still open,' he writes and calls news 'serendipitously good'. 'Phew, but yeah, that's amazing that he is still open. Good I guess,' Page replies. Strzok respond: 'Yeah, our utter incompetence actually helps us. 20% of the time I'm guessing :)'
January 5: Obama holds Oval Office briefing on Russian election interference with Joe Biden, CIA director John Brennan, FBI director James Comey, Director of National Intelligence James Clapper and deputy attorney general Sally Yates. He asks Comey and Yates to stay behind and says he has 'learned of the information' about Flynn's call to Kislyak. Comey mentions the Logan Act
January 10: Joe Biden is most senior Obama official to request an 'unmasking' of an intelligence report which reveals Flynn's name
January 12: Bombshell Washington Post report reveals Flynn's call to Kislyak on December 29, 'according to a senior U.S. government official' saying: 'What did Flynn say, and did it undercut the U.S. sanctions?' It mentions the Logan Act
January 14: Flynn tells Pence he did not discuss sanctions; in coming days Trump officials repeat this on television - including Mike Pence the following day
January 20: Trump is inaugurated; Flynn becomes national security advisor
January 22: The Wall Street Journal reveals Flynn is subject to a counter-intelligence investigation over links to Russia
January 23: Strzok and Andrew McCabe the FBI Deputy director exchange messages planning to interview Flynn
January 24: Two FBI agents - Peter Strzok and one whose name remains secret - go to the White House and interview Flynn in his West Wing office. Their notes say he denies talking about sanctions with Kislyak and said 'if I did I don't remember'
January 26 and 27: Yates tells White House counsel Don McGahn that Flynn has lied to Mike Pence and other officials, is therefore compromised, could be blackmailed by Russia, and other aspects of his conduct are worrying which she can't tell McGahn because they are classified
January 28: Flynn sits in the Oval Office to take part in Trump's first call with Putin
February 9: Washington Post reveals Flynn did discuss sanctions and publishes interview in which he repeats denial 'categorically.' After the story is published, he tells the newspaper a different version - that he may have discussed sanctions
February 10 and 11: Trump says he will 'look into' Flynn but the aide is at Mar-a-Lago dinner with Shinzo Abe
February 13: Washington Post reveals that McGahn was warned about Flynn by Yates. Flynn resigns admitting he 'inadvertently' misled Pence, prompting Pence to mislead on Face the Nation in January
February 14: Trump meets Comey and says Flynn is 'a good guy' and 'I hope you can see your way to letting this go.'