The former director of the FBI has accused the Trump administration of lying to the American people, and defaming him. James Comey is giving evidence at a powerful Senate committee about Russia's alleged role in Donald Trump's election as President.
Comey says he fully accepts the right of President Trump to sack him for whatever reason he chooses, but he says he has been "confused and concerned" - by what he says were lies about the reason for his dismissal.
"Although the law required no reason at all to fire an FBI Director, the administration then went on to defame me and, more importantly, the FBI".
"Saying that the organisation was in disarray, that it was poorly led, that the workforce had lost confidence in their leader... those were lies, plain and simple".
He told senators he was very disturbed by what be perceived as an attempt to get him to drop an inquiry into a former adviser's links with Russia. The White House has been forced to insist President Trump is "not a liar".
Comey's testimony could pave the way for impeachment proceedings against Trump if it highlights any attempt to obstruct the course of justice.