Last week Britain offered a possible route to citizenship for around three million Hong Kong residents. Why might that be needed? As Beijing passes a new national security law which could undermine Hong Kong's freedoms, we speak to a veteran pro-democracy campaigner on what has changed in the territory. Guests: Didi Tang, Times' Beijing correspondent.Emily Lau, former member of the Hong Kong Legislative Council.Nathan Law, Pro-democracy activist.Host: Manveen Rana.Clips: CNBC, BBC News, Sky News, CNN, CBS. See acast.com/privacy for privacy and opt-out information.