Second impeachment of Donald Trump due to start

The former US president Donald Trump is charged with inciting insurrection but says he will not testify, though his detractors say the evidence is overwhelming. We speak to a lawyer.

Mass protests on the streets of Myanmar continue for the fourth day in a row as the military leader of the coup lays out his conditions for a re-run of the election. A Rohingya Muslim in Yangon describes his fear right now, following the deadly crackdown by the army in 2017.

And a mathematics professor has just made a breakthrough on the problem of tying knots - he explains this research field of mathematics.