Fireworks illuminate the sky around Dubai’s Burj Khalifa, the world’s tallest tower, on November 27, 2013, after the Emirati city was chosen to host the World Expo 2020. The Gulf city state beat Russia’s Ekaterinberg in the final round of voting to clinch a prestigious event credited with delivering a huge boost to tourism and business for its host city. AFP PHOTO/KARIM SAHIB