The world this week
Politics The opening arguments were heard in the Senate trial that will decide whether to remove Donald Trump from power following his impeachment by the House of Representatives. The president faces two charges: abuse of power, for pressing the Ukrainian government to investigate a political rival, and obstruction of Congress, for directing officials to ignore subpoenas. Mr Trump’s defence team includes Ken Starr, whose investigations led to Bill Clinton’s impeachment, and Alan Dershowitz, who helped defend O.J. Simpson. They argue the charges “do not remotely approach the constitutional threshold for removing a president from office”. Investigating the investigator Brazilian prosecutors asked a judge to indict Glenn Greenwald, an American journalist, for helping a group that had hacked the phones of judges and lawyers. Mr Greenwald used messages between judicial officials, including Sergio Moro,…