Allegations that Donald Trump asked FBI Director James Comey to end an investigation into Michael Flynn's links to Russia have spurred calls for the president to be impeached. The explosive new development, stemming from a memo written by Mr Comey, followed a week of tumult at the White House after Mr Trump fired the FBI director and then discussed sensitive national security information about Islamic State with Russian Foreign Minister Sergei Lavrov. Even before the latest bombshell had hit the White House, at least two congressional Democrats had demanded the president be impeached, but Democratic House leader ... (full story)