Former UK leader Boris Johnson returns for second day of Covid-19 inquiry testimony

Former Prime Minister Boris Johnson returns for second day of testimony in public inquiry into COVID-19 pandemic. Johnson admits mistakes in handling crisis and lack of urgency in response. Testimony reveals government's failure to raise alarm earlier and implement lockdown. The inquiry is designed to uncover the lessons of COVID-19 to help officials better respond to future pandemics. Johnson's reputation further tarnished by scandals, including parties at Downing Street offices. COVID-19 death toll exceeds 232,000.