A Hong Kong news commentator accused of violating the national security law has denied exposing police intelligence operations, telling a court that details of his meeting with officers were already public knowledge before he posted them online. Wong Kwok-ngon, 72, who ran a YouTube commentary channel under the pen name Wong On-yin, stood trial at the District Court on Friday. He is the first person in Hong Kong to be prosecuted for allegedly prejudicing an investigation into national security...