Barcelona terror attack
巴塞羅那恐襲帶來的思考
As Spanish police investigate the origins of last week's terrorist attack on pedestrians in the Las Ramblas tourist district of Barcelona, Daniel Dombey asks Sam Jones and Michael Stothard what we know so far and how such attacks can be prevented.
過去的一周，又一座游人如織的歐洲名城遭到了恐怖襲擊，近幾年，這樣的情形已經讓人見慣不驚。這次恐襲給了我們怎樣的教訓？我們要怎樣才能杜絕此類隱患？