Impeachment: endgame begins
President Trump's trial in the Senate is due to begin on Tuesday. But might it actually help him and the Republicans? Also in this edition: how dangerous are the street protests in Iran for Ayatollah Khamenei?; President Putin shakes up the Russian constitution and government; France tries to take the fight to jihadists in the Sahel; the lessons from the election in Taiwan; and repopulating Espanola: why we've all been concentrating on the wrong tortoise. (Picture: US chief justice John Roberts presides over a preliminary hearing in the Senate. Credit: Reuters)