Markets mull the political twists of impeaching Trump

Revelations about Donald Trump’s interactions with Ukraine’s president are shaping up to be the most serious threat to his presidency so far, surpassing even the special counsel investigation into Russian election interference that dogged the first two years of his administration.

A whistleblower complaint released alleging that Mr Trump abused his power when he asked Ukraine’s Volodymyr Zelenskiy to investigate Joe Biden in a July telephone call compounded the damage from a rough transcript of the conversation the White House released earlier this week.