WeightWatchers shares tumble as Oprah decides to exit boardBiden takes on Trump over Russia, democracy in fiery State of the Union addressMore videos of Kiwi hostage Philip Mehrtens in Papua warn against Indonesian military air strikesNiwa proposes to cut up to 90 jobsLuke Fleurs: South African footballer shot dead in car hijackingChristopher Luxon defends use of taxpayer funds for AucklandCompanies 'not interested' in publicCoronavirus outbreak joins just five other public health emergencies from historyDonald Trump's hushRNZ's brand new current affairs show: 30 with Guyon Espiner