Donald Trump's second impeachment trial set to begin
The second impeachment trial of Donald Trump officially begins tomorrow, with the former US president facing the charge of 'inciting insurrection'. Democrats are pushing the case, which centres around the riot at the Capitol Building a month ago, which left five people dead. Trump has said he won't testify at the trial and his lawyers say you can't impeach a retired official. So what do we know about the trial and what could happen? US correspondent Simon Marks speaks to Susie Ferguson.