Speaking to reporters, Feb. 14, White House press secretary discussed the events leading up to the resignation of former national security adviser Michael Flynn from the Trump administration. Here are some key moments from that briefing. (Reuters) 
 
 Vice President Pence first learned that former national security adviser Michael Flynn had misled him about the nature of his contact with a Russian official on Feb. 9, a full two weeks after other White House officials were briefed on the matter, an aide to Pence said on Tuesday. 
 
 The timing indicates that Pence would have become aware of the controversy around the same time that a Washington Post report was published, detailing the degree to which Flynn had been in contact with the Russian ambassador to the United States on the issue of sanctions, Pence spokesman Marc Lotter said. 
 
 “What I would tell you is that the vice president became aware of incomplete information that he had received on Feb. 9, last Thursday night, based on media accounts,” Lotter said. “He did an inquiry based on those media accounts.” 
 
 In a January television interview, Pence said that Flynn had told him the issue of sanctions did not come up in his conversations with the Russian ambassador. 
 
 The revelation adds a new layer to the confusion within the White House as it seeks to explain why it took more than two weeks for Flynn to resign his post, even though senior officials, including the president, were aware that he had not told Pence the truth. 
 
 President Trump had been aware for “weeks” that Flynn had misled Pence and other officials, but did not act until Monday night, forcing the national security adviser to resign, the White House said on Tuesday. 
 
 White House counsel Don McGahn told Trump in a briefing late last month that Flynn, despite his claims to the contrary, had discussed U.S. sanctions with Russian Ambassador Sergey Kislyak, White House press secretary Sean Spicer said. Trump was briefed “immediately” after the Justice Department informed McGahn about the discrepancy, Spicer told reporters Tuesday. 
 
 Sally Q. Yates, the acting attorney general at the time, and a senior career national security official at the Justice Department had informed McGahn at his office about their concerns on Jan. 26, according to a person familiar with the briefing. Spicer said the president and a small group of senior aides were briefed by McGahn about Flynn that same day. 
 
 “We've been reviewing and evaluating this issue with respect to General Flynn on a daily basis for a few weeks, trying to ascertain the truth,” Spicer said. 
 
 [Justice Department warned White House that Flynn could be vulnerable to Russian blackmail, officials say] 
 
 The comments contrast with the impression Trump gave Friday aboard Air Force One that he was not familiar with a Washington Post report that revealed that Flynn had not told the truth about the calls. 
 
 “I don't know about that. I haven't seen it. What report is that? I haven't seen that. I'll look into that,” Trump told reporters on the plane. 
 
 Spicer said Tuesday that Trump was responding only to a question about The Post report and was not speaking about the overall issue of Flynn's contact with the Russian ambassador. 
 
 The White House Counsel's Office conducted a “review” of the legal issues and determined that “there was not a legal issue but rather a trust issue,” Spicer said. “The president was very concerned that General Flynn had misled the vice president and others. The president must have complete and unwavering trust of the person in that position.” 
 
 At the start of the daily White House briefing, Feb. 14, press secretary Sean Spicer spoke about the resignation of former national security adviser Michael Flynn. (Reuters) 
 
 [Michael Flynn resigns as national security adviser] 
 
 Spicer said that “the evolving and eroding level of trust as a result of a series of other issues is what led the president to ask for General Flynn's resignation.” He added that the president had an “instinctive” belief that Flynn had not broken any laws, which was later “confirmed” by an inquiry led by the White House Counsel's Office. 
 
 But the scrutiny of Flynn's contacts with Russian officials promises to continue despite his resignation. 
 
 In the first days of the new Trump administration, FBI agents interviewed Flynn about his communications with Kislyak, according to current and former officials. 
 
 The interview, which was first reported by the New York Times, could expose Flynn to possible charges if he denied to the agents, as he had earlier to Pence and other incoming Trump officials, that he had discussed with Kislyak sanctions imposed by the Obama administration for what it said was Russia’s interference in the November elections. 
 
 Lying to the FBI is a felony offense, and the agents were presumably in possession of a transcript of Flynn’s conversation with Kislyak when they questioned him. 
 
 In an interview with the Daily Caller, which he granted before his resignation, Flynn said he did not discuss anything inappropriate with the Russian ambassador. “If I did, believe me, the FBI would be down my throat, my clearances would be pulled,” he said. “There were no lines crossed.” 
 
 Flynn told the Daily Caller: “It wasn’t about sanctions. It was about the 35 guys who were thrown out.” He was referring to the expulsion by the Obama administration of 35 Russians it said were intelligence operatives using diplomatic cover. 
 
 “It was basically, ‘Look, I know this happened. We’ll review everything.’ I never said anything such as, ‘We’re going to review sanctions,’ or anything like that,” Flynn said. 
 
 For Obama officials at the time, even the promise to review the expulsions would have raised a red flag. 
 
 The White House has offered conflicting accounts over the past day about whether Flynn's decision to resign was his own or done at the request of the president, adding to the confusion over how the administration viewed Flynn's actions. Senior officials told reporters Monday night that Flynn offered his resignation voluntarily. And White House counselor Kellyanne Conway said on the “Today” show Tuesday morning that Flynn “had resigned” and was not forced to quit. 
 
 “The president is very loyal. He’s a very loyal person,” Conway said. “And by nighttime, Mike Flynn had decided it was best to resign. He knew he became a lightning rod, and he made that decision.” 
 
 Spicer, however, said repeatedly at Tuesday's briefing that Trump asked Flynn to leave. 
 
 Spicer also said that Trump was not concerned with the nature of the conversations that Flynn had with the Russian ambassador but that the lack of trust created an “unsustainable” situation. “The president has no problem with the fact that he acted in accord with what his job was supposed to be,” Spicer said. 
 
 National security officials monitored the calls of the Russian ambassador as part of routine surveillance of foreign officials in the United States. Spicer declined to say whether the president would declassify and release transcripts of Flynn's call with Kislyak. 
 
 “It is inappropriate for me to comment on those at this time,” Spicer said. “It is not an issue that has come up.” 
 
 Ashley Parker contributed to this report. ||||| Media playback is unsupported on your device Media caption Is losing a top job in 24 days a record? 
 
 Leading members of the US Republican Party have joined calls for a wide investigation into the former national security adviser's links with Russia. 
 
 Michael Flynn quit on Monday over claims he discussed US sanctions with Russia before Donald Trump took office. 
 
 On Tuesday, a White House spokesman said Mr Trump knew weeks ago there were problems with the Russia phone calls. 
 
 But calls for an independent investigation have encountered a cold response from some senior Republicans. 
 
 The development came as the New York Times reported that phone records and intercepted calls show members of Mr Trump's presidential campaign, as well as other Trump associates, "had repeated contacts with senior Russian intelligence officials in the year before the election". 
 
 However, officials spoken to by the newspaper said they had not yet seen evidence that the Trump campaign colluded with Russia on the hacking of the Democratic National Committee or to influence the election. 
 
 As well as an FBI investigation, both the Senate and House intelligence committees are already examining Russian involvement in the election. It is not yet clear whether the latest claims will be included in their scope. 
 
 Why Mr Flynn resigned 
 
 He stood down over allegations he discussed US sanctions with a Russian envoy in December, before Mr Trump took office. 
 
 The conversations took place about the time that then-President Barack Obama was imposing retaliatory measures on Russia following reports it attempted to sway the US election in Mr Trump's favour. 
 
 Mr Flynn could have broken a law - known as the Logan Act - by conducting US diplomacy as a private citizen, before he was appointed as national security adviser. 
 
 More on the Flynn scandal 
 
 The retired army lieutenant-general initially denied having discussed sanctions with Ambassador Sergei Kislyak. Vice-President Mike Pence publicly denied the allegations on his behalf. 
 
 The White House admitted it had been warned about the contacts on 26 January but President Trump initially concluded Mr Flynn had not broken any law. 
 
 Media playback is unsupported on your device Media caption White House press secretary Sean Spicer: "What this came down to, was a matter of trust" 
 
 White House lawyers then conducted a review and questioned Mr Flynn before reaching the same conclusion as Mr Trump, White House spokesman Sean Spicer said, but the trust had gone. 
 
 "In the end, it was misleading the vice-president that made the situation unsustainable," White House Counsellor Kellyanne Conway said on Tuesday. 
 
 Mr Flynn was also reportedly questioned by FBI agents in his first days as national security adviser, according to US media. 
 
 What Mr Flynn says 
 
 In an interview conducted with the conservative website The Daily Caller on Monday, but published only on Tuesday, Mr Flynn said he "crossed no lines" in his conversation with the ambassador. 
 
 He said he discussed the expulsion of 35 Russian diplomats over alleged hacking ahead of the election, but "it wasn't about sanctions". 
 
 He said he was concerned that the apparently classified information had been leaked. "In some of these cases, you're talking about stuff that's taken off of a classified system and given to a reporter," he said. "That's a crime." 
 
 However, in his resignation letter, Mr Flynn said "the fast pace of events" during the presidential transition meant that he had "inadvertently briefed the vice-president elect and others with incomplete information regarding my phone calls with the Russian ambassador". 
 
 How are Republicans reacting? 
 
 Media playback is unsupported on your device Media caption Kellyanne Conway said Gen Flynn either "misled" or "could not completely recall" his conversation 
 
 In his first public comments about the controversy, President Trump tweeted on Tuesday: "The real story here is why are there so many illegal leaks coming out of Washington? Will these leaks be happening as I deal on N Korea etc?" 
 
 US House Intelligence Committee Chairman Devin Nunes told reporters on Tuesday he wanted to examine the leaks, and said the FBI should explain why Mr Flynn's conversation had been recorded. 
 
 But the Senate's second-ranking Republican,John Cornyn, and other Republican senators have called for an investigation into Mr Trump's connections with Russian officials. 
 
 Republican John McCain, Chairman of the Senate Armed Services Committee, said Mr Flynn's resignation was a "troubling indication of the dysfunction of the current national security apparatus", which raised questions about Mr Trump's intentions towards Russia. 
 
 Meanwhile, the Senate's most senior Republican, Mitch McConnell, said the intelligence committee was already looking into Russian influence on the election, indicating there was no need for a new investigative panel. 
 
 And Russia? 
 
 Kremlin spokesman Dmitry Peskov said Russia would not be commenting on the resignation. 
 
 "This is the internal affair of the Americans, the internal affair of the Trump administration," he added. "It's nothing to do with us." 
 
 Image copyright AP Image caption Mr Flynn was pictured dining with Russian leader Vladimir Putin in December 2015 
 
 What will America's allies think? - by BBC diplomatic correspondent Jonathan Marcus 
 
 Gen Flynn's resignation comes just as senior US officials are mounting a major effort to reassure uncertain allies in Europe about the Trump administration's intentions. 
 
 The new US Defence Secretary General James Mattis, Secretary of State Rex Tillerson and Vice-President Mike Pence are all in Europe over the coming days. Gen Mattis is in the vanguard - he meets his Nato counterparts in Brussels on Wednesday. 
 
 There will be few tears shed within the alliance over Gen Flynn. His was widely seen as a bizarre and destabilising appointment. 
 
 But his demise and the rumbling row over team Trump's contacts with Russia continues to cause unease at Nato where many governments wonder at the Trump administration's resolve in standing up to what they see as a new assertiveness from Moscow. 
 
 Many key US officials are still to be appointed and the continuing chaos at the heart of the Trump administration is a cause for concern among Nato countries whatever reassurance the heavyweight US diplomatic trio may bring. 
 
 Media playback is unsupported on your device Media caption The US public has "serious questions" about US-Russia ties, says congressman Raja Krishnamoorthi 
 
 What happens next? 
 
 Democrat Adam Schiff, a member of the House Permanent Select Committee on Intelligence, has said Mr Flynn's departure will not end questions about contacts between Trump's campaign and Russia. But there are various ways that these questions could be answered. 
 
 Two Democratic members of the House of Representatives have demanded a classified briefing to Congress on Michael Flynn by the justice department and FBI. 
 
 Several House Democrats had already called on Oversight Committee Chairman Jason Chaffetz to launch an investigation into Mr Flynn's ties to Russia. 
 
 More on Trump's first 100 days: ||||| White House says Trump asked for Flynn's resignation after erosion of 'trust' Trump's aides had earlier said that Flynn’s departure came of his own volition. 
 
 President Donald Trump lost trust in his national security adviser, prompting the commander in chief to request Michael Flynn’s resignation, the White House said Tuesday. 
 
 Breaking with counselor to the president Kellyanne Conway’s explanation for Flynn’s departure, White House press secretary Sean Spicer said Trump asked Flynn to hand in his resignation after the president’s trust in his adviser was irreparably damaged. 
 
 Story Continued Below 
 
 Trump for weeks had known that Flynn misled Vice President Mike Pence and other administration officials about the contents of his conversation with the Russian ambassador to the U.S. during the transition period, according to Spicer, who blamed the Justice Department for the pace of events. 
 
 “We’ve been reviewing and evaluating this issue with respect to General Flynn on a daily basis for a few weeks trying to ascertain the truth. We got to a point not based on a legal issue but based on a trust issue where the level of trust between the president and General Flynn had eroded to the point where he felt he had to make a change,” Spicer told reporters. 
 
 “The president must have complete and unwavering trust for the person in that position,” he continued. “The evolving and eroding level of trust as a result of this situation in a series of other questionable instances is what led the president to ask for General Flynn’s resignation.” 
 
 Spicer, however, refused to elaborate on any of the “other questionable instances.” Rather, he detailed the timeline of events that ultimately led to Flynn’s dismissal and was adamant throughout the daily briefing that Flynn violated Trump’s trust, not any law. He also suggested that the DOJ sat on its information for nearly two weeks, allowing Pence to convey false information in a Jan. 15 TV interview before informing the White House about Flynn’s misstatements on Jan. 26. 
 
 “It would be unbelievably shortsighted and wrong to go in and dismiss someone immediately,” Spicer said, explaining the White House's delayed reaction. “In fact, what the president did was take decisive action to make sure that the White House counsel thoroughly reviewed and vetted the situation. He took immediate, decisive action.” 
 
 White House counsel Don McGahn briefed Trump and a small group of advisers “immediately after” the DOJ notified McGahn’s office that Flynn potentially misled administration officials and was possibly susceptible to Russian blackmail, Spicer said, noting that the counsel’s office conducted an “extensive review” of the legality of Flynn’s call before Trump “evaluated the truth aspect of it.” 
 
 “The issue here was that the president got to the point where General Flynn’s misleading the vice president and others or the possibility that he had forgotten critical details of this important conversation had created a critical mass and an unsustainable situation,” he added. “That’s why the president decided to ask for his resignation, and he got it. The irony of this entire situation is that the president has been incredibly tough on Russia.” 
 
 Trump himself had cast Flynn’s resignation as a distraction, tweeting Tuesday morning that the “real story” is the amount of leaks about his administration. 
 
 His attempt to change the subject came as reports have mushroomed of a West Wing in chaos. The president has careened from one crisis to another during the first few weeks of his administration, as he’s churned out controversial executive orders, battled with foreign leaders and sought to fight back against accounts of vicious infighting among his aides. 
 
 In the most recent crisis, Trump accepted Flynn’s resignation Monday evening after the retired lieutenant general and former head of the Defense Intelligence Agency misled Pence and other administration officials on the details of his conversation with Russia’s ambassador to the U.S. Flynn had reportedly discussed with the emissary a reprieve of sanctions the Obama administration imposed on the Kremlin in December for conducting cyberattacks during the presidential election, potentially breaking the law, as he was at the time a private citizen. 
 
 Flynn acknowledged communicating with the ambassador but denied that sanctions were discussed, and Pence defended him on a Sunday public affairs show based off their conversation. 
 
 In an interview with the conservative news outlet Daily Caller conducted on Monday and published on Tuesday, Flynn maintained that he crossed “no lines.” “If I did, believe me, the FBI would be down my throat. My clearances would be pulled. There were no lines crossed,” he said. 
 
 Flynn admitted to discussing the expulsion of 35 Russian diplomats — which was one component of the Obama administration's sanctions — but argued that “it wasn’t about sanctions.” 
 
 “It was about the 35 guys who were thrown out,” Flynn said. “So that’s what it turned out to be. It was basically: ‘Look, I know this happened. We’ll review everything.’ I never said anything such as, ‘We’re going to review sanctions,’ or anything like that.” 
 
 The Washington Post reported Monday that Trump administration officials were briefed by a top Justice Department official last month on Flynn’s misstatements, and the embattled adviser resigned soon after. But Trump signaled that the Flynn narrative is merely a diversion. 
 
 “The real story here is why are there so many illegal leaks coming out of Washington?” he tweeted, in what appeared to be a subtle jab at the intelligence community. “Will these leaks be happening as I deal on N.Korea etc?” 
 
 Trump has struggled to contain leaks during his weeks-old administration. Reporters have unearthed extraordinary details from inside the White House, including the contentious calls with foreign leaders and the president’s displeasure with a woman lampooning his press secretary on “Saturday Night Live.” 
 
 He also blamed the intelligence community last month for allegedly leaking information about an unsubstantiated Russian dossier containing compromising and salacious information about him, which BuzzFeed had published in full. 
 
 A White House aide told POLITICO last week that the administration has launched an investigation into leaks coming out of Washington. 
 
 In another blow delivered to Trump's White House on Tuesday, House Oversight and Government Reform Committee Chairman Jason Chaffetz has given White House chief of staff Reince Priebus two weeks to respond to questions about the administration's security practices following reports Monday that sensitive information was discussed while among Mar-a-Lago members. 
 
 Other lawmakers also appeared to add to Trump's headaches. 
 
 Senate Majority Leader Mitch McConnell told reporters it’s “highly likely” that the chamber’s Intelligence Committee will investigate whether Flynn talked about sanctions with the Russian ambassador. 
 
 South Carolina Sen. Lindsey Graham speculated that perhaps Flynn “went rogue,” expressing skepticism that Flynn would talk sanctions with the Russian ambassador unbeknownst to the White House. He added that Americans have the right to know whether he spoke for the Trump administration or the call was a “rogue maneuver.” 
 
 “Now I may be wrong,” he told CNN. “Maybe he did this in a rogue fashion. Maybe General Flynn went rogue.” 
 
 Trump’s tweet Tuesday appeared to echo dialogue from Conway’s interview on “Fox & Friends.” Conway, a counselor to the president, thanked co-host Steve Doocy for highlighting what he called “troubling” leaks out of Washington about Flynn’s conversations that may have come directly from the intelligence community. 
 
 “You may be the only outlet talking about that this morning so thank you for shining a light there,” Conway said. “Look, leaks are always disturbing. I think the president of the United States has made that very clear. And leaks when it has to do with security intelligence information are that much more concerning just hypothetically.” 
 
 Trump’s allies conveyed mixed messages concerning the details of Flynn’s resignation, exposing an apparent rift among Trump’s top aides. Spicer, the official spokesman for the administration, said repeatedly that Trump asked for Flynn’s resignation, breaking with Conway’s position that Flynn resigned on his own but aligning somewhat with House Speaker Paul Ryan. 
 
 “I think it’s really important that as soon as they realized that they were being misled by their national security adviser, they asked for his resignation,” Ryan said, although Spicer later indicated that the White House spent “weeks” reviewing Flynn’s behavior. 
 
 Conway, on the other hand, insisted that Flynn’s departure came of his own volition. She argued that Flynn’s dialogue with the Russian ambassador wasn’t at issue, instead contending that Flynn’s mischaracterization of that discussion to the vice president and others is what became “unsustainable.” 
 
 “In this particular case, there was an incident or so that just became unsustainable for him to carry on in that role,” she said. “And that was a decision he made, and the president accepted his resignation and is moving on.” 
 
 Conway and Spicer, at the president’s request, both referenced a statement during their TV appearances that Charles Krauthammer made Monday night — which suggests Trump was aware that Flynn had discussed sanctions with Russia. 
 
 Krauthammer, who Trump tweeted “has zero” credibility on this day last year, told Fox News’ Bret Baier that the Flynn controversy was a “a cover-up without a crime.” “The idea that one should be all aghast because the incoming national security adviser spoke with the Russian ambassador and spoke about sanctions seems to me to be perfectly reasonable,” he said. “The idea that it was illegal is preposterous.” 
 
 On Tuesday, Spicer and Conway were both adamant that Flynn didn't break the law. For her part, Conway said it wasn’t “a particular contact or incident by itself” that led to Flynn’s demise. 
 
 “It’s really the cumulative effect of that leading to incomplete or misleading, forgetful information, frankly,” she said. “And completely misleading information, that really was the key here.” 
 
 Conway initially said Monday that Flynn had Trump’s “full confidence.” In a separate interview Tuesday on ABC’s “Good Morning America,” the White House aide conceded that she doesn’t “know all the details” but argued that it was “a very fluid situation.” 
 
 “General Flynn assured Vice President Pence of something that turned out to not be true, and that’s really the key here,” she said. “I think that General Flynn in the end decided he was a lightning rod. He did not want to be a distraction and he tendered his resignation last night because what he had provided the vice president either was a product of misleading information or forgetfulness, and neither one was sustainable long term.” 
 
 Retired Lt. Gen. Keith Kellogg will serve as acting national security adviser and head of the National Security Council in the interim as Trump looks for Flynn’s successor. 
 
 “The president is currently evaluating a group of very strong candidates that will be considered to fill the national security adviser position permanently and is confident in the ability of General Kellogg, a decorated and distinguished veteran of the United States Army, until that person is ultimately chosen,” Spicer said. 
 
 Flynn, however, will likely stay in the headlines for a while. Senate Foreign Relations Chairman Bob Corker told reporters on Tuesday that Flynn may be asked to testify as part of a larger probe into Russia’s alleged election-season hacking. 
 
 “I think there needs to be fulsome investigation on all angles relative to nefarious activities that were taking place with Russia, beginning in March but even going back before that time,” Corker said, adding that “an element of that” may be Flynn testifying.
– President Trump knew that Mike Flynn had misled VP Mike Pence about his contacts with the Russian ambassador weeks before Pence was informed, it emerged Tuesday as the national security adviser's resignation continued to rock the administration. Pence spokesman Marc Lotter tells the Washington Post that the vice president "became aware of incomplete information" on Feb. 9 following a Post story on the issue. The White House, however, says Trump and other top administration officials were briefed on the Justice Department's concerns about Flynn at least two weeks earlier. "It's not that he was being left out. It was a legal review," an administration source tells CNN. In other developments: The FBI interviewed Flynn in late January after it warned the Trump administration that he could be blackmailed, the New York Times reports. If authorities determine that he lied during that interview, he could face felony charges. In an interview with the Daily Caller hours before his resignation, Flynn insisted there were "no lines crossed" in his conversation with Russian Ambassador Sergey Kislyak. "It wasn't about sanctions. It was about the 35 guys who were thrown out," Flynn said, referring to former President Obama's expulsion of Russian diplomats in December. "It was basically, 'Look, I know this happened. We'll review everything.' I never said anything such as, 'We're going to review sanctions,' or anything like that." Legal experts tell Politico that Flynn faces a real risk of prosecution if he wasn't truthful with the FBI, and claiming to have forgotten parts of the conversation probably won't work. Lawyer Mark Zaid says a puzzling aspect of the case is that, as a former director of the Defense Intelligence Agency, Flynn must have known that conversations with ambassadors from countries like Russia would be under surveillance. Republican senators are among those calling for a full investigation of the Flynn affair, but he still has his defenders, including Rush Limbaugh. On Tuesday, the radio host described pressure on Flynn as a "political assassination" by the media, the Hill reports. "They think they have blood in the water, they've got a scalp, and they think they can get another and then another and then another and then another until finally they get Trump," he said. The BBC reports that Pence and other top US officials will be in Europe later this week to reassure American allies—though NATO allies will apparently be untroubled by the departure of Flynn, who was seen as "a bizarre and destabilizing appointment."