Contact-tracing apps 'will only work if universal' Russia 'interested in cooperation' with China on 5G Russia to begin mass vaccine trials Global rankings reveal health of airport sector EU to work with remaining parties to save Iran nuclear deal: Borrell Croatia, Austria added to UK's quarantine list EU welcomes cease-fire in Libya Unidentified objects in a southern lights' video Britain could lead the way for self-driving technology EU concludes exploratory talks with CureVac to buy potential COVID-19 vaccine Nazi graffiti at scene of massacre condemned Human chain rescues man from danger at sea WHO: COVID-19 pandemic hoped to end in two years Belgians take hard look at the colonial past Turkey discovers natural gas in Black Sea: President WHO says global access to a viable vaccine is crucial WHO hopes the pandemic can be over in two years, Tedros says Post-Brexit UK-EU deal not easy to achieve, says British chief negotiator Berlin attacker moved to psychiatric unit