As it happened: Trump impeachment trial begins with witness battle - BBC News
Our coverage on day one of President Donald Trump historic impeachment trial in the US Senate.
That ends our coverage of the first day of the impeachment trial of President Donald Trump - only the third such trial in US history.

So far the senators have debated the rules under which the trial should be conducted. No witnesses have yet been authorised to testify.

Despite efforts by Democrats to force the White House to provide documents, the vote failed after splitting along party lines.

This is just the beginning, of course. Republican Senate leader Mitch McConnell, who sets the rules for the chamber, says he is hoping the trial will last just 10 days.

Follow the latest on the day's historic events here:

Trump trial starts with rule wrangling in the Senate

Analysis: 'No crime, no impeachment' is a shaky defence