South Korea's suspended president arrested over his attempt to impose martial law

South Korean investigators say the impeached president, Yoon Suk Yeol, is refusing to answer questions under interrogation. He was arrested on Wednesday in relation to his short-lived imposition of martial law in early December. In a video message the president said he had agreed to appear before the investigators to prevent any bloodshed, though he described the investigation as illegal.We speak to a member of the opposition and to a prominent South Korean writer about the mood in the country.Also in the programme: an international panel of experts says we need to improve how we diagnose obesity to avoid over-diagnosis; firefighters in LA brace for new high winds; Is Space being privatised - and is that fair? And Kenya's only ice hockey team goes international.Photo: Supporters of impeached South Korean President Yoon Suk Yeol rally near the Corruption Investigation Office for High-ranking officials following his arrest. Credit: Soo-hyeon/ REUTERS