Donald Trump '100%' willing to testify under oath on James Comey

President Donald Trump has accused fired FBI director James Comey of lying to Congress and said he was "100%" willing to testify under oath about their conversations.

Mr Trump cryptically refused to say whether those private exchanges were taped - a matter at the heart of the conflicting accounts of what passed between them at a time when Mr Comey was leading an FBI investigation into Russia's interference in the presidential election and its ties to the Trump campaign.